title: A new pregnane steroid from the stems of Caralluma umbellata.
abstract: 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.
authors.affiliation: Organic Chemistry Division-I, Indian Institute of Chemical Technology, Hyderabad, India.
authors.forename: Kothamasu Suresh
authors.initials: KS
authors.lastname: Babu
authors.forename: Vidadala Rama Subba
authors.initials: VR
authors.lastname: Rao
authors.forename: Sriveda Vyasa
authors.initials: SV
authors.lastname: Radhakrishnan
authors.forename: Janaswami Madhusudana
authors.initials: JM
authors.lastname: Rao
authors.forename: Sakhamuri Siva
authors.initials: SS
authors.lastname: Rambabu
mesh_terms: D029062:Apocynaceae / Q000737:chemistry*; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry*; D011278:Pregnanes / Q000737:chemistry*
chemical_list: D011278:Pregnanes