反应 #1435762

反应方程式

(1R,4S,5R,9S,10S,12S,13S,14S)-14-(methoxymethoxy)-5,9-dimethyl-13-(methylsulfinyl)tetracyclo[10.2.2.01,10.04,9]hexadecane-5-carboxylic acid

trifluoroacetic acid

→

(1R,4S,5R,9S,10S,12S,13S,14S)-14-hydroxy-5,9-dimethyl-13-(methylsulfinyl)tetracyclo[10.2.2.01,10.04,9]hexadecane-5-carboxylic acid

溶剂

tetrahydrofuran

反应条件

后处理

1. 1
   workup.STIRRINGAfter stirring at 50° C. for 29 hours
2. 2
   其他the reaction mixture was evaporated

实验过程

To a solution of (1R,4S,5R,9S,10S,12S,13S,14S)-14-(methoxymethoxy)-5,9-dimethyl-13-(methylsulfinyl)tetracyclo[10.2.2.01,10.04,9]hexadecane-5-carboxylic acid (4.1 mg, 0.0099 mmol) obtained in Example 115 in tetrahydrofuran (2 mL) was added trifluoroacetic acid (2 mL) under stirring on ice. After stirring at 50° C. for 29 hours, the reaction mixture was evaporated, to give (1R,4S,5R,9S,10S,12S,13S,14S)-14-hydroxy-5,9-dimethyl-13-(methylsulfinyl)tetracyclo[10.2.2.01,10.04,9]hexadecane-5-carboxylic acid. This product was further purified by silica gel column chromatography so as to separate two isomers based on the configuration of sulfoxide, to give isomer 1 (0.71 mg) and isomer 2 (1.01 mg).

来源