Borthakur, M and Barthakur, M G and Boruah, R C
(2008)
Microwave promoted one-pot synthesis of novel A-ring fused steroidal dehydropiperazines.
Steroids, 73 (5).
pp. 539-542.
Abstract
The preparation of ring-A fused steroidal dehydropiperazine at the 3,4-position is herein
described. The novel steroidal dehydropiperazines were prepared from the annulation reaction
of ethylenediamine with 3-keto-4-en steroids in a one-pot reaction under microwave
irradiation. The key step involves base catalysed aerial oxidation of the C-6 methylene group
followed by cyclocondensation of ethylenediamine via Michael addition reaction.
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