title: Pregnene derivatives from Solenostemma argel leaves.
abstract: Two new pregnene derivatives 14beta-15alpha-dihydroxy-delta4pregnene-3,20 dione and 3beta-14beta,15alpha-16alpha hydroxy-20-oxo-delta5pregnene-tetra-ol, in addition to alpha- and beta-amyrin and beta-sitosterol, were isolated from Solenostemma argel leaves. The structures were established by extensive spectral analysis as well as comparison with reference materials.
authors.affiliation: Faculty of Science, South Valley University, Aswan, Egypt.
authors.forename: H A
authors.initials: HA
authors.lastname: Hassan
authors.forename: A I
authors.initials: AI
authors.lastname: Hame
authors.forename: N A
authors.initials: NA
authors.lastname: El-Emary
authors.forename: I V
authors.initials: IV
authors.lastname: Springue
authors.forename: H
authors.initials: H
authors.lastname: Mitome
authors.forename: H
authors.initials: H
authors.lastname: Miyaoka
mesh_terms: D000352:Africa, Northern; D001685:Biological Factors / Q000737:chemistry* / Q000302:isolation & purification*; D008519:Medicine, Traditional; D009828:Oleanolic Acid / Q000031:analogs & derivatives; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry* / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D001685:Biological Factors; D012855:Sitosterols; D014315:Triterpenes; C025473:gamma-sitosterol; D009828:Oleanolic Acid; C036380:beta-amyrin