Abstract
Two new steroidal alkaloids, (20 S)-(bennzamido)-3 beta-(N,N-dimethyamino)-pregnane (1), and (20 S)-(bennzamido)-pregnane-3-one- (2), and two known steroidal alkaloids, pachysanaximine A (3) and 3 beta, 20 alpha-diacetamido-5 alpha-pregnane (4) were isolated from the whole plant of Sarcococca saligna. The structures of these compounds were identified with the help of spectroscopic techniques while spectra for known compounds were compared with spectra reported in literature. The immunomodulatory potential of the new compounds were found to be significant and dose dependent. Compound 1 showed inhibition of T cells proliferation at 10 mu g/mL (95%), and inhibition of IL-2 production with an IC50 = 1.6 mu g/mL. (C) 2015 Phytochemical Society of Europe. Published by Elsevier B.V. All rights reserved.