3.alpha.,5-cyclo-22,23-dihydroxy-5.alpha.-steroid compounds

Details 3.alpha.,5-cyclo-22,23-dihydroxy-5.alpha.-steroid compounds 3.alpha.,5-cyclo-22,23-dihydroxy-5.alpha.-steroid compounds

1986-05-01

1989-08-29

Lee, Mary C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

2603971, 2603973, 2603974, 2603975, C07J 1700

Patent

active

048618756

ABSTRACT:
New steroid compounds of the general formula: ##STR1## wherein X is a hydroxyl group and Y is a hydrogen atom, or X and Y, taken together, form an oxo group; each of the two R' radicals is independently a hydrogen atom, acyl group, a silyl group, an alkoxycarbonyl group or a benzyl group, or the two R' radicals, taken together, form an alkylidene or a carbonyl group, the stereo-configuration at the 22- and 23-positions being either 22R and 23R or 22S and 23S; and R" and R'" are independently of each other a hydrogen atom or a lower alkyl group, as well as processes for preparing same. These new steroid compounds are valuable intermediates for brassinolide and its analogues useful as plant hormones.

REFERENCES:
patent: 3337591 (1967-08-01), Freiberg et al.
patent: 4545938 (1985-10-01), Mosbach et al.
Kozikowski et al., J.A.C.S., 1980, vol. 102, pp. 6580-6581.
Chemical Abstracts, vol. 92, No. 7, Abstract 59104q, p. 708, Feb. 18, 1980.
Chemical Abstracts, vol. 97, No. 5, Abstract 36080t, p. 312, Aug. 2, 1982.
Chemical Abstracts, vol. 106, No. 13, Abstract 102,614c, p. 692, Mar. 30, 1987.

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