Isolation of a new steroid from phytochemical investigation on .

A new steroid (acylated C pregnane steroid) was isolated from chloroform extract in phytochemical screening of . The isolated compound is found to be 3β-hydroxy-14β-(6'- carboxyphenyl)propionyloxypregn-5-en-20-one based on spectroscopic studies (IR, H NMR, C NMR, DEPT, COSY, HSQC, HMBC and ESI-MS). The isolated new steroid was tested against four bacterial strains and the activity was related to the structure of the molecule.

A new pregnane steroid from the stems of Caralluma umbellata.

A new pregnane steroid with an unusual formyl group (1) was isolated from the stems of Caralluma umbellata, together with three known steroid compounds. The structure of 1 was elucidated on the basis of spectral evidence including 2D NMR studies.