The object of the present invention is to synthesize vitamin D derivatives in which the 1-position is substituted with methyl and the steric configuration at the 20-position is epimerized.;The present invention provides vitamin D derivatives of Formula (1): wherein R is straight or branched alkyl optionally substituted with hydroxy.
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机译：本发明的目的是合成其中1-位被甲基取代并且在20-位的空间构型是差向异构的维生素D衍生物。本发明提供了式（1）的维生素D衍生物： <图像文件=“ IMGA0001.GIF” he =“ 75” imgContent =“ chem” imgFormat =“ GIF” wi =“ 81” /> 其中R是直链或支链烷基任选地被羟基取代。
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