A new steroidal alkaloid from a marine sponge Corticium sp

Tetrahedron Letters
1998.0

Abstract

Two new steroidal alkaloids 3 alpha-amino-23,29-imino-B(9a)-homo-19-nor-5 alpha-stigmasta-1(10),7,9(11),23(N)-tetraene (1) and 3 alpha-amino-23,29-imino-B(9a)-homo-19-nor-5 alpha-stigmasta-1(10),7,23(N)-triene (2) have been isolated from a Pacific marine sponge Corticium sp. The structures of compounds 1 and 2 were defined by spectral methods and mainly 1D and 2D NMR experiments. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

DOI： 10.1016/S0040-4039(98)01655-4

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