title: [Studies on the chemical constituents of Croomia japonica Miq].
abstract: A new steroid alkaloid, namely croomionidine (II), together with four known compounds pachysamine A(I), croomine (III), didehydrocroomine (IV) and beta-sitosterol were isolated from the roots of Croomia japonica Miq. Their structures were identified by IR, MS, 1H NMR, 13C NMR and chemical conversion.
authors.affiliation: Department of Organic Chemistry, School of Pharmaceutical Sciences, Beijing Medical University.
authors.forename: W H
authors.initials: WH
authors.lastname: Lin
authors.forename: M S
authors.initials: MS
authors.lastname: Cai
authors.forename: B P
authors.initials: BP
authors.lastname: Ying
authors.forename: R
authors.initials: R
authors.lastname: Feng
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D015394:Molecular Structure; D011278:Pregnanes / Q000737:chemistry / Q000302:isolation & purification*; D011759:Pyrrolidines / Q000737:chemistry / Q000302:isolation & purification*; D013141:Spiro Compounds / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D011278:Pregnanes; D011759:Pyrrolidines; D013141:Spiro Compounds; C082846:croomionidine; C082844:pachysamine A; C082845:croomine