Patent ID: 6184398
Filing Date: 2001-02-06
Classification: C07C,C07J

Abstract:
A vitamin D derivative of general formula (1): ##STR18##whereinX represents an oxygen or sulfur atom,R.sub.11 represents a saturated or unsaturated aliphatic hydrocarbon group which may be substituted by a hydroxyl group or a protected hydroxyl group, a --COR.sub.12 group where R.sub.12 represents an alkyl, aryl or alkoxy group, or ##STR19##wherein R.sub.5 and R.sub.6 each represent a hydrogen atom or a hydroxyl group, m represents an integer of 1 to 4, and n represents an integer of 0 to 2,R.sub.2 represents --OR.sub.9 or a hydrogen atom, andR.sub.9 and R.sub.10 may by the same or different and each represents a hydrogen atom or a protecting group.