4-碘丁酸乙酯

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: Following the procedure of Example 7 except substituting 1-bromopentane for 1-bromononane, ethoxylamine hydrochloride for methoxylamine hydrochloride and ethyl-3 iodovalerate for ethyl-4-iodobutyrate, and eliminating the addition of dicyclohexylamine, the title compound is obtained.

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

实验步骤: Following the procedure of Example 12 except substituting 1-hexenylcarboxylic acid for 1-decenylcarboxylic acid, ethoxylamine hydrochloride for methoxylamine hydrochloride and ethyl-3 iodovalerate for ethyl-4-iodobutyrate, and eliminating the addition of dicyclohexylamine, the title compound is obtained.

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

实验步骤: Following the procedure of Example 12 except substituting 1-heptenylcarboxylic acid for 1-decenylcarboxylic acid, and ethyl-5 iodovalerate for ethyl-4-iodobutyrate and eliminating the addition of dicyclohexylamine, the title compound is obtained.

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

实验步骤: A mixture of 1-methyl-7-(pivaloyloxymethyl)xanthine (350 mg, 1.25 mmes) sodium carbonate (265 mg, 2.50 mmoles) and ethyl 4-iodobutyrate (384 μl, 2.50 mmole) in 5.8 ml dry DMF was stirred under nitrogen at room temperature for 18 hours. Water was added and the reaction mixture extracted with chloroform. After drying, the extracts were stripped to leave a yellow oil which goes to chromotographed on four thick silica gel plates with 10% EtOH/CHCl3. The band was scraped off and eluted with 100 ml of 25% EtOH/CHCl3 to yield 609 mg of the desired product as an oil. the reaction mixture extracted with chloroform After drying to leave a yellow oil which eluted with 100 ml of 25% EtOH/CHCl3

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

实验步骤: A mixture of 1-methyl-7-(pivaloyloxymethyl)xanthine (350 mg, 1.25 mmes) sodium carbonate (265 mg, 2.50 mmoles) and ethyl 4-iodobutyrate (384 μl, 2.50 mmole) in 5.8 ml dry DMF was stirred under nitrogen at room temperature for 18 hours. Water was added and the reaction mixture extracted with chloroform. After drying, the extracts were stripped to leave a yellow oil which goes to chromotographed on four thick silica gel plates with 10% EtOH/CHCl3. The band was scraped off and eluted with 100 ml of 25% EtOH/CHCl3 to yield 609 mg of the desired product as an oil. the reaction mixture extracted with chloroform After drying to leave a yellow oil which eluted with 100 ml of 25% EtOH/CHCl3

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

实验步骤: A solution of the phenol from Step 3 (470 mg), methyl ethyl ketone (10 mL), milled potassium carbonate (600 mg) and ethyl 4-iodo-butyrate (421 mg) was refluxed overnight The solids were filtered, and the filtrate was evaporated. The residue was purified by flash chromatography using toluene-ethyl acetate (10:0.3) to afford the title product as yellow solid: m.p. 61°-63° C. was refluxed overnight The solids were filtered the filtrate was evaporated The residue was purified by flash chromatography

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

实验步骤: A mixture of 1-methyl-7-(pivaloyloxymethyl)xanthine (350 mg, 1.25 mmes ) sodium carbonate (265 mg, 2.50 mmoles) and ethyl 4-iodobutyrate(384 μl, 2.50 mmole) in 5.8 ml dry DMF was stirred under nitrogen at room temperature for 18 hours. Water was added and the reaction mixture extracted with chloroform. After drying, the extracts were stripped to leave a yellow oil which goes to chromotographed on four thick silica gel plates with 10% EtOH/CHCl3. The band was scraped off and eluted with 100 ml of 25% EtOH/CHCl3 to yield 609 ml of the desired product as an oil. the reaction mixture extracted with chloroform After drying to leave a yellow oil which eluted with 100 ml of 25% EtOH/CHCl3

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

实验步骤: A mixture of 1-methyl-7-(pivaloyloxymethyl)xanthine (350 mg, 1.25 mmes) sodium carbonate (265 mg, 2.50 mmoles) and ethyl 4-iodobutyrate (384 μl, 2.50 mmole) in 5.8 ml dry DMF was stirred under nitrogen at room temperature for 18 hours. Water was added and the reaction mixture extracted with chloroform. After drying, the extracts were stripped to leave a yellow oil which goes to chromotographed on four thick silica gel plates with 10% EtOH/CHCl3. The band was scraped off and eluted with 100 ml of 25% EtOH/CHCl3 to yield 609 mg of the desired product as an oil. the reaction mixture extracted with chloroform After drying to leave a yellow oil which eluted with 100 ml of 25% EtOH/CHCl3

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

实验步骤: Following the procedure of Example 7 except substituting 1-bromopentane for 1-bromononane, ethoxylamine hydrochloride for methoxylamine hydrochloride and ethyl-3 iodovalerate for ethyl-4-iodobutyrate, and eliminating the addition of dicyclohexylamine, the title compound is obtained.

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

实验步骤: Following the procedure of Example 7 except substituting 1-bromopentane for 1-bromononane, ethoxylamine hydrochloride for methoxylamine hydrochloride and ethyl-3 iodovalerate for ethyl-4-iodobutyrate, and eliminating the addition of dicyclohexylamine, the title compound is obtained.

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

实验步骤: Following the procedure of Example 12 except substituting 1-hexenylcarboxylic acid for 1-decenylcarboxylic acid, ethoxylamine hydrochloride for methoxylamine hydrochloride and ethyl-3 iodovalerate for ethyl-4-iodobutyrate, and eliminating the addition of dicyclohexylamine, the title compound is obtained.