Stereochemistry in the hydrogenation of steroidal (22R)- and (22S)-.DELTA.24-26,22-lactones.

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公開日
1986
DOI
  • 10.1248/cpb.34.2061
  • 10.1002/chin.198645310
公開者
公益社団法人 日本薬学会

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説明

Catalytic hydrogenation of the (22R)-unsaturated loctone 8 and its (22S)-epimer 9 afforded stereoselectively the (22R, 24R)-saturated lactone 10 and the (22S, 24S)-isomer 11, respectively. The C-24 stereochemistry of the hydrogenated products was determined by their conversion into 24-ethylcholesterols.

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