Process for the preparation of 21-hydroxy-20-keto-.DELTA..sup.16

Details Process for the preparation of 21-hydroxy-20-keto-.DELTA..sup.16 Process for the preparation of 21-hydroxy-20-keto-.DELTA..sup.16

1984-04-27

1985-10-22

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603975, 26039745, 26039747, 2603973, 26023955C, C07J 900

Patent

active

045487499

ABSTRACT:
A novel process for the preparation of 21-hydroxy-20-keto-.DELTA..sup.16 -steroids comprising reacting a 17-(isocyanosulfonylmethylene)-steroid with an aldehyde and an alcohol to form a 17-(2-alkoxy-3-oxazolin-4-yl)-.DELTA..sup.16 -steroid and subjecting the latter to hydrolysis to obtain the corresponding 21-hydroxy-20-keto-.DELTA..sup.16 -steroid which are useful to prepare corticoid steroids and novel intermediates.

REFERENCES:
patent: 4460509 (1984-07-01), Mosbach et al.

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