“…To cite this article: N. SrinivasaReddy , P. Ramesh & Y. Venkateswarlu (1999) A Novel C-27 Nor Steroid from the Marine Sponge Petrosia Testudinariaα, Natural Product Letters, 14:2, 131-134, DOI: 10.1080/10575639908041220To link to this article: http://dx.doi.org/10.1080/10575639908041220PLEASE SCROLL DOWN FOR ARTICLETaylor & Francis makes every effort to ensure the accuracy of all the information (the "Content") contained in the publications on our platform. However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content.Several novel sterols with side chain modified by alkylations/dealkylationsand extra oxygen substitution at different positions have been reported from sponges'.…”