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1. (Article ID: 11176)
Ma YL, Tian ZK, Kuang HX, Yuan CS, Shao CJ, Ohtani K, Kasai R, Tanaka O, Okad, Y, Okuyama T
Studies of the Constituents of Astragalus membranaceus BUNGE. III. Structure of Triterpenoidal Glycosides, Huangqiyenins A and B, from the Leaves
Chemical and Pharmaceutical Bulletin 45(2) (1997)
359-361
Two new cycloartane-type triterpenoidal saponins, huangqiyenins A and B, were isolated from the leaves of Astragalus membranaceus BUNGE (Leguminosae) collected in Heilongjiang Province, China, and established as 3-O-β-D-glucopyranosyl-(20R,24S)-16β,25-dihydroxy-20,24-epoxy-9,19-cyclolanost-6-one and 3-O-β-D-glucopyranosyl-(24S)-16β,24,25-trihydroxy-cyclolanost-6-one, respectively, on the basis of chemical and spectral evidence.
triterpenoidal saponin, Astragalus membranaceus, cycloartane, huangqiyenin A, huangqiyenin B
Publication DOI: 10.1248/cpb.45.359Journal NLM ID: 0377775Publisher: Pharmaceutical Society Of Japan
Institutions: Heilongjiang University of Traditional Chinese Medicine
Methods: 13C NMR, 1H NMR, IR, enzymatic hydrolysis, ESI-MS, chemical methods, extraction, CC, HR-FAB-MS
The publication contains the following compound(s):
- Compound ID: 28107
|
b-D-Glcp-(1-3)-Subst
Subst = 20R,24S-3β,16β,25-trihydroxy-20,24-epoxy-9,19-cyclolanost-6-one = SMILES CC(C)([C@]12[H]){3}[C@@H](O)CC[C@]2(C3)C43CC[C@]5(C)[C@@H]([C@](C)(O6)CC[C@H]6{25}C(C)(O)C){16}[C@@H](O)C[C@](C)5[C@]4([H])CC1=O |
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Structure type: monomer
; 649.3962 [M-H]-
C36H58O10
Trivial name: huangqiyenin A
Compound class: saponin glycoside
- Compound ID: 28108
|
b-D-Glcp-(1-3)-Subst
Subst = (24S)-3β,16β,24,25-tetrahydroxy-9,19-cyclolanost-6-one = SMILES CC(C)([C@]12[H]){3}[C@@H](O)CC[C@]2(C3)C43CC[C@]5(C)[C@@H]([C@H](C)CC{24}[C@H](O){25}C(C)(O)C){16}[C@@H](O)C[C@](C)5[C@]4([H])CC1=O |
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Structure type: monomer
; 651.4175 [M-H]-
C36H60O10
Trivial name: huangqiyenin B
Compound class: saponin glycoside
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