Pregnane derivatives and method of producing the same
申请人:Kuraray Co., Ltd.
公开号:US04867914A1
公开(公告)日:1989-09-19
There are provided 12-hydroxy-.DELTA..sup.4 or .DELTA..sup.1,4 -pregnan-3-one-20-carbaldehyde and microbial method of producing the same. The compounds are novel and useful as starting materials for the synthesis of corticoids, typically prednisone, prednisolone and hydrocortisone, which have antiinflammatory activity.
12.alpha.-Substituted pregna-1,4-diene-3,20-diones, which are novel compounds, are provided. These compounds are useful as intermediates for the synthesis of antiinflammatory corticoids represented by prednisone, prednisolone, etc.
Verfahren zur 12a-Hydroxylierung von Steroiden der Formel
worin
X ein Wasserstoffatom oder ein Fluoratom bedeutet, und
R1 ein Wasserstoffatom oder eine Methylgruppe sowie
R2 ein Wasserstoffatom oder eine Hydroxygruppe oder
R1 und R2 gemeinsam eine Isopropylidendroxygruppe darstellen,
R3 ein Wasserstoffatom oder eine Alkanoylgruppe mit 1 bis 6 Kohlenstoffatomen darstellt,
mit einer Kultur Cereospora kaki (CBS 128 39).
12a-substituted pregna-1,4-diene-3,20-dione of the general formula
wherein R is a hydrogen atom, R1CO or R2SO2 where R1 is a hydrogen atom, an alkyl group which may optionally be substituted or an aryl group which may optionally be sub- stitued and R2 si an alkyl group.
These compounds are useful as intermediates for the synthesis of antiinflammatory corticoids such as prednisone, prednisolone, etc..
通式为 12a 取代的孕甾-1,4-二烯-3,20-二酮
其中 R 是氢原子、R1CO 或 R2SO2,R1 是氢原子、可选择被取代的烷基或可选择被取代的芳基,R2 si 是烷基。
这些化合物可用作合成泼尼松、泼尼松龙等抗炎皮质激素的中间体。