Title:
STEROID COMPOUNDS
Document Type and Number:
WIPO Patent Application WO/1990/000560
Kind Code:
A1
Abstract:
Steroid compounds represented by general formulae (I), (II) or (III), wherein R1 and R2 each represents a hydrogen atom or a hydroxyprotecting group, R represents -CH2-X, a carboxyl group or a protected carboxyl group, X represents a substituent such as a hydroxy group, A1 represents an aryl group, a lower alkyl group or an aralkyl group, and Z1, Z2, Z3 and Z4 each represents a hydrogen atom, a hydroxy group or a protected hydroxy group. The steroid compounds are useful as intermediates for synthesis of vitamin D3 derivatives having a hydroxy group in the 1alpha position.
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Inventors:
TSUJI JIRO (JP)
TAKAHASHI TAKASHI (JP)
TSUJI MASAO (JP)
NAKAGAWA NAOSHI (JP)
TAKIGAWA TETSUO (JP)
TAKAHASHI TAKASHI (JP)
TSUJI MASAO (JP)
NAKAGAWA NAOSHI (JP)
TAKIGAWA TETSUO (JP)
Application Number:
PCT/JP1988/000988
Publication Date:
January 25, 1990
Filing Date:
September 28, 1988
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C07C401/00; C07J9/00; C07J31/00; C07J51/00; C07J53/00; C07J71/00; (IPC1-7): C07J9/00; C07C172/00
Foreign References:
| JPH05651447A | ||||
| JPS56131600A | 1981-10-15 |
Other References:
See also references of EP 0377743A4
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