Synthesis of C.sub.18 -modified vitamin D compounds and compound

Organic compounds -- part of the class 532-570 series – Organic compounds – 9,10-seco-cyclopentanohydrophenanthrene ring system or...

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C07C40100

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ABSTRACT:
The invention relates to a new vitamin D compound, substituted in the 18-position with an alkyl group, a hydroxy group, an alkoxy group, an alkenyl group, an alkynyl group, a fluorinated alkyl group or a fluorinated alkenyl group. The invention also relates to a method of preparing said vitamin D compound and to a lactone and a hydrindane intermediate. The vitamin D compound is of the general formula ##STR1##

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