title: Two novel steroidal derivatives from chloroform-soluble extract of Hoya longifolia.
abstract: The structures of two novel steroidal derivatives (1 and 4) were elucidated. Steroidal derivatives namely fologenin (1) and hoyagenin (4) have been isolated from chloroform-soluble extract of the whole plant of Hoya longifolia (family: Asclepiadaceae), and their structures were determined by using (1)H NMR, (13)C NMR, (1)H-(1)H COSY and FAB-MS techniques as well as chemical degradation and derivatisation.
authors.affiliation: a Department of Chemistry , University of Lucknow , Lucknow 226007 , India.
authors.forename: Pawan K
authors.initials: PK
authors.lastname: Srivastava
authors.affiliation: a Department of Chemistry , University of Lucknow , Lucknow 226007 , India.
authors.forename: Mukul R
authors.initials: MR
authors.lastname: Gupta
authors.affiliation: a Department of Chemistry , University of Lucknow , Lucknow 226007 , India.
authors.forename: Naveen K
authors.initials: NK
authors.lastname: Khare
mesh_terms: D029062:Apocynaceae / Q000737:chemistry*; D002725:Chloroform / Q000737:chemistry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010936:Plant Extracts; D013256:Steroids; C000609500:fologenin; C000609501:hoyagenin; D002725:Chloroform
keywords: Asclepiadaceae; Hoya longifolia; fologenin; hoyagenin; pregnane; steroid