Process for preparing 21 acyloxy-.DELTA.4,9(11),16 pregnatrienes

Details Process for preparing 21 acyloxy-.DELTA.4,9(11),16 pregnatrienes Process for preparing 21 acyloxy-.DELTA.4,9(11),16 pregnatrienes

1993-10-29

1995-03-28

Mars, Howard T.

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

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

540 4, 540 30, 540 34, 540 40, C07J 500

Patent

active

054018641

ABSTRACT:
A process for the preparation of a compound of the formula ##STR1## wherein R.sub.1 is acyl of 1 to 8 carbon atoms, by reducing an intermediary to form an alcohol, oxidizing the alcohol to form an aidehyde, which is subjected to the action of an acyloxylation agent.

REFERENCES:
patent: 2744108 (1956-05-01), Ralls
patent: 4309432 (1982-01-01), Biollaz
Greene et al, Protective Groups in Organic Synthesis, pp. 203-205, 1982.

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