氯甲酸叔丁酯

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of (S)-benzyl 4-(3-(1,3-dioxoisoindolin-2-yl)propyl)-5-oxooxazolidine-3-carboxylate (11.6 g, 28.40 mmol) in DCM (30.0 mL) was added Et3SiH (13.6 mL, 85.3 mmol). The reaction mixture was stirred overnight, concentrated under reduced pressure, and dissolved in THF (100 mL). To the resulting solution was added tert-butyl chloroformate (4.4 mL, 34.08 mmol) and TEA (12.0 mL, 85.2 mmol) at 0° C. The reaction mixture was stirred at RT for 30 min. The precipitate was filtered off and the filtrate was added into a suspension of NaBH4 in water (1.0 mL) at 0° C. The reaction mixture was stirred at RT for 30 min. LCMS indicated the completion of the reaction. The reaction mixture was acidified to pH 3 by HCl (1N) and extracted with EtOAc (300 mL×2). The combined organic layers were washed with saturated NaHCO3 and brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified on silica gel using a mixture of EtOAc and hexanes to give (S)-benzyl 5-(1,3-dioxoisoindolin-2-yl)-1-hydroxypentan-2-yl(methyl)carbamate (5.01 g, 45%). LRMS (M+H+) m/z 397.3. concentrated under reduced pressure dissolved in THF (100 mL) The reaction mixture was stirred at RT for 30 min The precipitate was filtered off the filtrate was added into a suspension of NaBH4 in water (1.0 mL) at 0° C The reaction mixture was stirred at RT for 30 min the completion of the reaction extracted with EtOAc (300 mL×2) The combined organic layers were washed with saturated NaHCO3 and brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified on silica gel using a mixture of EtOAc and hexanes

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of (S)-benzyl 4-(3-(1,3-dioxoisoindolin-2-yl)propyl)-5-oxooxazolidine-3-carboxylate (11.6 g, 28.40 mmol) in DCM (30.0 mL) was added Et3SiH (13.6 mL, 85.3 mmol). The reaction mixture was stirred overnight. The mixture was concentrated under reduced pressure and dissolved in THF (100 mL). To this THF solution was added tert-butyl chloroformate (4.4 mL, 34.08 mmol) at 0° C. followed by TEA (12.0 mL, 85.2 mmol) and stirred at RT for 30 min. The precipitate was filtered off and the filtrate was added into a NaBH4 suspension in water (1.0 mL) at 0° C., and the mixture was stirred at RT for 30 min. LC/MS indicated the completion of the reaction. The mixture was acidified to pH 3 using HCl (1 N). The aqueous layer was extracted with EtOAc (300 mL×2). The combined organic layer was washed with NaHCO3, brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude was purified on silica gel column using a mixture of EtOAc and hexanes to give (S)-benzyl 5-(1,3-dioxoisoindolin-2-yl)-1-hydroxypentan-2-yl(methyl)carbamate (5.01 g, 45%). LRMS (M+H+) m/z 397.3. The mixture was concentrated under reduced pressure dissolved in THF (100 mL) stirred at RT for 30 min The precipitate was filtered off the filtrate was added into a NaBH4 suspension in water (1.0 mL) at 0° C. the mixture was stirred at RT for 30 min the completion of the reaction The aqueous layer was extracted with EtOAc (300 mL×2) The combined organic layer was washed with NaHCO3, brine dried over Na2SO4 filtered concentrated under reduced pressure The crude was purified on silica gel column a mixture of EtOAc and hexanes

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of (S)-benzyl 4-(3-(1,3-dioxoisoindolin-2-yl)propyl)-5-oxooxazolidine-3-carboxylate (11.6 g, 28.40 mmol) in DCM (30.0 mL) was added Et3SiH (13.6 mL, 85.3 mmol). The reaction mixture was stirred overnight, concentrated under reduced pressure, and dissolved in THF (100 mL). To the resulting solution was added tert-butyl chloroformate (4.4 mL, 34.08 mmol) and TEA (12.0 mL, 85.2 mmol) at 0° C. The reaction mixture was stirred at RT for 30 min. The precipitate was filtered off and the filtrate was added into a suspension of NaBH4 in water (1.0 mL) at 0° C. The reaction mixture was stirred at RT for 30 min. LCMS indicated the completion of the reaction. The reaction mixture was acidified to pH 3 by HCl (1N) and extracted with EtOAc (300 mL×2). The combined organic layers were washed with saturated NaHCO3 and brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified on silica gel using a mixture of EtOAc and hexanes to give (S)-benzyl 5-(1,3-dioxoisoindolin-2-yl)-1-hydroxypentan-2-yl(methyl)carbamate (5.01 g, 45%). LRMS (M+H+) m/z 397.3. concentrated under reduced pressure dissolved in THF (100 mL) The reaction mixture was stirred at RT for 30 min The precipitate was filtered off the filtrate was added into a suspension of NaBH4 in water (1.0 mL) at 0° C The reaction mixture was stirred at RT for 30 min the completion of the reaction extracted with EtOAc (300 mL×2) The combined organic layers were washed with saturated NaHCO3 and brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified on silica gel using a mixture of EtOAc and hexanes

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of (S)-benzyl 4-(3-(1,3-dioxoisoindolin-2-yl)propyl)-5-oxooxazolidine-3-carboxylate (11.6 g, 28.40 mmol) in DCM (30.0 mL) was added Et3SiH (13.6 mL, 85.3 mmol). The reaction mixture was stirred overnight. The mixture was concentrated under reduced pressure and dissolved in THF (100 mL). To this THF solution was added tert-butyl chloroformate (4.4 mL, 34.08 mmol) at 0° C. followed by TEA (12.0 mL, 85.2 mmol) and stirred at RT for 30 min. The precipitate was filtered off and the filtrate was added into a NaBH4 suspension in water (1.0 mL) at 0° C., and the mixture was stirred at RT for 30 min. LC/MS indicated the completion of the reaction. The mixture was acidified to pH 3 using HCl (1 N). The aqueous layer was extracted with EtOAc (300 mL×2). The combined organic layer was washed with NaHCO3, brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude was purified on silica gel column using a mixture of EtOAc and hexanes to give (S)-benzyl 5-(1,3-dioxoisoindolin-2-yl)-1-hydroxypentan-2-yl(methyl)carbamate (5.01 g, 45%). LRMS (M+H+) m/z 397.3. The mixture was concentrated under reduced pressure dissolved in THF (100 mL) stirred at RT for 30 min The precipitate was filtered off the filtrate was added into a NaBH4 suspension in water (1.0 mL) at 0° C. the mixture was stirred at RT for 30 min the completion of the reaction The aqueous layer was extracted with EtOAc (300 mL×2) The combined organic layer was washed with NaHCO3, brine dried over Na2SO4 filtered concentrated under reduced pressure The crude was purified on silica gel column a mixture of EtOAc and hexanes

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of (S)-benzyl 4-(3-(1,3-dioxoisoindolin-2-yl)propyl)-5-oxooxazolidine-3-carboxylate (11.6 g, 28.40 mmol) in DCM (30.0 mL) was added Et3SiH (13.6 mL, 85.3 mmol). The reaction mixture was stirred overnight, concentrated under reduced pressure, and dissolved in THF (100 mL). To the resulting solution was added tert-butyl chloroformate (4.4 mL, 34.08 mmol) and TEA (12.0 mL, 85.2 mmol) at 0° C. The reaction mixture was stirred at RT for 30 min. The precipitate was filtered off and the filtrate was added into a suspension of NaBH4 in water (1.0 mL) at 0° C. The reaction mixture was stirred at RT for 30 min. LCMS indicated the completion of the reaction. The reaction mixture was acidified to pH 3 by HCl (1N) and extracted with EtOAc (300 mL×2). The combined organic layers were washed with saturated NaHCO3 and brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The residue was purified on silica gel using a mixture of EtOAc and hexanes to give (S)-benzyl 5-(1,3-dioxoisoindolin-2-yl)-1-hydroxypentan-2-yl(methyl)carbamate (5.01 g, 45%). LRMS (M+H+) m/z 397.3. concentrated under reduced pressure dissolved in THF (100 mL) The reaction mixture was stirred at RT for 30 min The precipitate was filtered off the filtrate was added into a suspension of NaBH4 in water (1.0 mL) at 0° C The reaction mixture was stirred at RT for 30 min the completion of the reaction extracted with EtOAc (300 mL×2) The combined organic layers were washed with saturated NaHCO3 and brine dried over Na2SO4 filtered concentrated under reduced pressure The residue was purified on silica gel using a mixture of EtOAc and hexanes

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of (S)-benzyl 4-(3-(1,3-dioxoisoindolin-2-yl)propyl)-5-oxooxazolidine-3-carboxylate (11.6 g, 28.40 mmol) in DCM (30.0 mL) was added Et3SiH (13.6 mL, 85.3 mmol). The reaction mixture was stirred overnight. The mixture was concentrated under reduced pressure and dissolved in THF (100 mL). To this THY solution was added tert-butyl chloroformate (4.4 mL, 34.08 mmol) at 0° C. followed by TEA (12.0 mL, 85.2 mmol) and stirred at RT for 30 min. The precipitate was filtered off and the filtrate was added into a NaBH4 suspension in water (1.0 mL) at 0° C., and the mixture was stirred at RT for 30 min. LC/MS indicated the completion of the reaction. The mixture was acidified to pH 3 using HCl (1 N). The aqueous layer was extracted with EtOAc (300 mL×2). The combined organic layer was washed with NaHCO3, brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude was purified on silica gel column using a mixture of EtOAc and hexanes to give (S)-benzyl 5-(1,3-dioxoisoindolin-2-yl)-1-hydroxypentan-2-yl(methyl)carbamate (5.01 g, 45%). LRMS (M+H+) m/z 397.3. The mixture was concentrated under reduced pressure dissolved in THF (100 mL) stirred at RT for 30 min The precipitate was filtered off the filtrate was added into a NaBH4 suspension in water (1.0 mL) at 0° C. the mixture was stirred at RT for 30 min the completion of the reaction The aqueous layer was extracted with EtOAc (300 mL×2) The combined organic layer was washed with NaHCO3, brine dried over Na2SO4 filtered concentrated under reduced pressure The crude was purified on silica gel column a mixture of EtOAc and hexanes

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The 3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines (60, 61, 62, 63) were prepared by reacting the amines (8-11) with a t-butyloxycarbonyl transfer agent such as di-t-butylcarbonate or t-butyloxycarbonyl chloride or the like in the presence of an acid scavenger such as a tertiary amine including pyridine, lutidine, triethylamine and the like either with or without an inert solvent such as an ether or chlorocarbon in a temperature range of room temperature to the reflux temperature of the reaction mixture for 6-72 hours, preferable in dichloromethane and di-t-butylcarbonate at ambient temperature for 12-24 hours to give the 3-(N-t-butyloxycarbonyl-1'-aminoethyl)-1-(S-α-Methylbenzyl)pyrrolidin-5-ones, 48, 49, 50, 51, Equation 14. The two amides were removed by reacting the pyrrolidin-5-ones (48-51) with a hydride reducing agent in an inert solvent. The preferred method was with lithium aluminum hydride in THF at reflux for 12-24 hours giving the individual diastereomeric pyrrolidines, 52, 53, 54, 55, Equation 15. The reduced pyrrolidines, 52-55, could be protected by reacting the 3-N-methyl-1'-aminomethyl moiety with a t-butyloxycarbonyl transfer agent such as di-t-butylcarbonate or t-butyloxycarbonyl chloride or the like in the presence of an acid scavenger such as a tertiary amine including pyridine, lutidine, triethylamine and the like either with or without an inert solvent such as an ether or chlorocarbon in a temperature range of room temperature to the reflux temperature of the reaction mixture for 6-72 hours, preferably in dichloromethane and di-t-butyldicarbonate at ambient temperature for 12-24 hours to give the 1-(α-methylbenzyl)-3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 56, 57, 58, 59, Equation 16. The 3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 56-59 were de-α-methylbenzylated via hydrogenolysis using varying percentages of palladium on an inert support such as carbon, alumina, silica, or the like, preferably 20% palladium on carbon in an inert solvent such as methanol, ethanol, THF, or ethyl acetate. This provides the 3-(1'-N-t-butoxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 60, 61, 62, 63 (Equation 17) in a form suitable for coupling with a quinolone or naphthyridone nucleus. The two amides were removed at reflux for 12-24 hours giving the individual diastereomeric pyrrolidines, 52, 53, 54, 55, Equation 15

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The 3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines (60, 61, 62, 63) were prepared by reacting the amines (8-11) with a t-butyloxycarbonyl transfer agent such as di-t-butylcarbonate or t-butyloxycarbonyl chloride or the like in the presence of an acid scavenger such as a tertiary amine including pyridine, lutidine, triethylamine and the like either with or without an inert solvent such as an ether or chlorocarbon in a temperature range of room temperature to the reflux temperature of the reaction mixture for 6-72 hours, preferable in dichloromethane and di-t-butylcarbonate at ambient temperature for 12-24 hours to give the 3-(N-t-butyloxycarbonyl-1'-aminoethyl)-1-(S-α-Methylbenzyl)pyrrolidin-5-ones, 48, 49, 50, 51, Equation 14. The two amides were removed by reacting the pyrrolidin-5-ones (48-51) with a hydride reducing agent in an inert solvent. The preferred method was with lithium aluminum hydride in THF at reflux for 12-24 hours giving the individual diastereomeric pyrrolidines, 52, 53, 54, 55, Equation 15. The reduced pyrrolidines, 52-55, could be protected by reacting the 3-N-methyl-1'-aminomethyl moiety with a t-butyloxycarbonyl transfer agent such as di-t-butylcarbonate or t-butyloxycarbonyl chloride or the like in the presence of an acid scavenger such as a tertiary amine including pyridine, lutidine, triethylamine and the like either with or without an inert solvent such as an ether or chlorocarbon in a temperature range of room temperature to the reflux temperature of the reaction mixture for 6-72 hours, preferably in dichloromethane and di-t-butyldicarbonate at ambient temperature for 12-24 hours to give the 1-(α-methylbenzyl)-3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 56, 57, 58, 59, Equation 16. The 3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 56-59 were de-α-methylbenzylated via hydrogenolysis using varying percentages of palladium on an inert support such as carbon, alumina, silica, or the like, preferably 20% palladium on carbon in an inert solvent such as methanol, ethanol, THF, or ethyl acetate. This provides the 3-(1'-N-t-butoxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 60, 61, 62, 63 (Equation 17) in a form suitable for coupling with a quinolone or naphthyridone nucleus. The two amides were removed at reflux for 12-24 hours giving the individual diastereomeric pyrrolidines, 52, 53, 54, 55, Equation 15

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 0.6 g (1.05 mmol) of 4-[3-(4-tert-butoxycarbonylamino-cyclohexylcarbamoyl)-5-(4-cyano-phenoxy)-phenoxy]-benzoic acid was dissolved in 15 ml of THF. At −10° C. 0.18 ml (1.57 mmol) of N-methylmorpholine was added. The reaction mixture was stirred for 15 min at 0° C. 0.14 ml (1.36 mmol) of tert-butylchloroformate was added and the reaction mixture was stirred for 1 h at RT. Further 6.0 ml of 30% of ammonia solution was added during 10 min at 0° C. and reaction progress was monitored by TLC. Upon completion of the reaction the contents were diluted with 50 ml ethyl acetate. Organic layer was separated and Washed with 3×50 ml saturated sodium bicarbonate solution, dried over anhydrous sodium sulphate and concentrated under reduced pressure to afford 0.4 g of the required product. Percentage purity (LCMS): 60.0%, (M+1)=570.2. At −10° C the reaction mixture was stirred for 1 h at RT reaction progress Upon completion of the reaction the contents Organic layer was separated Washed with 3×50 ml saturated sodium bicarbonate solution dried over anhydrous sodium sulphate concentrated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The 3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines (60, 61, 62, 63) were prepared by reacting the amines (8-11) with a t-butyloxycarbonyl transfer agent such as di-t-butylcarbonate or t-butyloxycarbonyl chloride or the like in the presence of an acid scavenger such as a tertiary amine including pyridine, lutidine, triethylamine and the like either with or without an inert solvent such as an ether or chlorocarbon in a temperature range of room temperature to the reflux temperature of the reaction mixture for 6-72 hours, preferable in dichloromethane and di-t-butylcarbonate at ambient temperature for 12-24 hours to give the 3-(N-t-butyloxycarbonyl-1'-aminoethyl)-1-(S-α-methylbenzyl)pyrrolidin-5-ones, 48, 49, 50, 51, Equation 14. The two amides were removed by reacting the pyrrolidin-5-ones (48-51) with a hydride reducing agent in an inert solvent. The preferred method was with lithium aluminum hydride in THF at reflux for 12-24 hours giving the individual diastereomeric pyrrolidines, 52, 53, 54, 55, Equation 15. The reduced pyrrolidines, 52-55, could be protected by reacting the 3-N-methyl-1'-aminomethyl moiety with a t-butyloxycarbonyl transfer agent such as di-t-butylcarbonate or t-butyloxycarbonyl chloride or the like in the presence of an acid scavenger such as a tertiary amine including pyridine, lutidine, triethylamine and the like either with or without an inert solvent such as an ether or chlorocarbon in a temperature range of room temperature to the reflux temperature of the reaction mixture for 6-72 hours, preferably in dichloromethane and di-t-butyldicarbonate at ambient temperature for 12-24 hours to give the 1-(α-methylbenzyl)-3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 56, 57, 58, 59, Equation 16. The 3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 56-59 were de-α-methylbenzylated via hydrogenolysis using varying percentages of palladium on an inert support such as carbon, alumina, silica, or the like, preferably 20% palladium on carbon in an inert solvent such as methanol, ethanol, THF, or ethyl acetate. This provides the 3-(1'-N-t-butoxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 60, 61, 62, 63 (Equation 17) in a form suitable for coupling with a quinolone or naphthyridone nucleus. The two amides were removed at reflux for 12-24 hours giving the individual diastereomeric pyrrolidines, 52, 53, 54, 55, Equation 15

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The 3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines (60, 61, 62, 63) were prepared by reacting the amines (8-11) with a t-butyloxycarbonyl transfer agent such as di-t-butylcarbonate or t-butyloxycarbonyl chloride or the like in the presence of an acid scavenger such as a tertiary amine including pyridine, lutidine, triethylamine and the like either with or without an inert solvent such as an ether or chlorocarbon in a temperature range of room temperature to the reflux temperature of the reaction mixture for 6-72 hours, preferable in dichloromethane and di-t-butylcarbonate at ambient temperature for 12-24 hours to give the 3-(N-t-butyloxycarbonyl-1'-aminoethyl)-1-(S-α-methylbenzyl)pyrrolidin-5-ones, 48, 49, 50, 51, Equation 14. The two amides were removed by reacting the pyrrolidin-5-ones (48-51) with a hydride reducing agent in an inert solvent. The preferred method was with lithium aluminum hydride in THF at reflux for 12-24 hours giving the individual diastereomeric pyrrolidines, 52, 53, 54, 55, Equation 15. The reduced pyrrolidines, 52-55, could be protected by reacting the 3-N-methyl-1'-aminomethyl moiety with a t-butyloxycarbonyl transfer agent such as di-t-butylcarbonate or t-butyloxycarbonyl chloride or the like in the presence of an acid scavenger such as a tertiary amine including pyridine, lutidine, triethylamine and the like either with or without an inert solvent such as an ether or chlorocarbon in a temperature range of room temperature to the reflux temperature of the reaction mixture for 6-72 hours, preferably in dichloromethane and di-t-butyldicarbonate at ambient temperature for 12-24 hours to give the 1-(α-methylbenzyl)-3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 56, 57, 58, 59, Equation 16. The 3-(N-t-butyloxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 56-59 were de-α-methylbenzylated via hydrogenolysis using varying percentages of palladium on an inert support such as carbon, alumina, silica, or the like, preferably 20% palladium on carbon in an inert solvent such as methanol, ethanol, THF, or ethyl acetate. This provides the 3-(1'-N-t-butoxycarbonyl-1'-N-methylaminoethyl)pyrrolidines, 60, 61, 62, 63 (Equation 17) in a form suitable for coupling with a quinolone or naphthyridone nucleus. The two amides were removed at reflux for 12-24 hours giving the individual diastereomeric pyrrolidines, 52, 53, 54, 55, Equation 15

反应条件: temp:10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 29 g of L-valine is dissolved in 250 ml of 1N aqueous NaOH, and to the solution is added water so that 400 ml of the solution is obtained. To the solution is added 150 ml of tetrahydrofuran. Then, while vigorously stirring at 10° C., to the solution are added 100 ml of Boc-Cl by 1/5 amounts at intervals of ten minutes, while 2N aqueous NaOH is added after every addition of Boc-Cl in such amount as will provide a pH value of about 8 to 9. Two hours later, the mixture is extracted with diethyl ether. The aqueous layer is acidified with an aqueous solution of 0.5 M aqueous citric acid, whereby an oily substance is precipitated. The precipitate is extracted with ethyl acetate. The extract is washed with a small amount of water, dried over Na2SP4, and concentrated under reduced pressure. To the concentrated extract is added petroleum ether, and the mixture is allowed to stand in a refrigerator, whereby a crystal is formed. The crystal is filtered off and dried. Thus, there is obtained 30 g of Boc-valine having a melting point of 78° C. The yield of the product is 55%. is obtained as will provide a pH value of about 8 to 9 Two hours later, the mixture is extracted with diethyl ether is precipitated The precipitate is extracted with ethyl acetate The extract is washed with a small amount of water dried over Na2SP4 concentrated under reduced pressure To the concentrated extract is added petroleum ether is formed The crystal is filtered off dried