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1. (Article ID: 11555)
Konishi M, Hano Y, Takayama M, Nomura T, Hamzah A, Ahmad R, Jasmani H
Triterpenoid saponins from Hedyotis nudicaulis
Phytochemistry 48(3) (1998)
525-528
Three new triterpenoid saponins, nudicaucins A, B and C and a known saponin guaiacin D have been isolated from the n-butanol extract of Hedyotis nudicaulis. The structures of nudicaucins A, B and C were elucidated to be β-D-glucopyranosyl 3-O-[β-D-galactopyranosyl(1 → 3)α-L-arabinopyranosyl]- 30-norolean-12,20(29)-dien-28-oate, β-D-glucopyranosyl 3-O-β-D- galactopyranosyl(1 → 3)α-[-arabinopyranosyl]oleanoate and β-D- glucopyranosyl 3-O-[α-[-L-rhamnopyranosyl(1 → 2)α-L-arabinopyranosyl(3 → 1)β-D-glucopyranosyl]oleanoate, respectively, on the basis of NMR spectroscopic analysis and comparison of the spectral data with those of known saponins.
triterpenoid saponin, B and C, Rubiaceae, Hedyotis nudicaulis, nudicaucins A
Publication DOI: 10.1016/S0031-9422(98)00038-7Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Faculty of Pharmaceutical Science, Toho University, Funabashi, Chiba, Japan, School of Applied Sciences, Institut of Teknologi MARA, Shah Alam, Selangor, Malaysia
Methods: 13C NMR, 1H NMR, FAB-MS, TLC, biological assays, extraction, optical rotation measurement, CC, melting point determination, HMBC
The publication contains the following compound(s):
- Compound ID: 29647
|
b-D-Glcp-(1-28)-+
|
b-D-Glcp-(1-3)-+ |
| |
a-L-Rhap-(1-2)-a-L-Arap-(1-3)-Subst
Subst = akebonoic acid = SMILES C=C5CC[C@]4({28}C(=O)O)CC[C@]3(C)/C(=C\CC2[C@@]1(C)CC{3}[C@H](O)[C@](C)(C)C1CC[C@]23C)C4C5 |
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Structure type: oligomer
; 1065 [M+Na]+
Trivial name: guaiacin D
Compound class: triterpenoid glycoside
- Compound ID: 29646
|
b-D-Glcp-(1-28)-+
|
b-D-Galp-(1-3)-a-L-Arap-(1-3)-Subst
Subst = akebonoic acid = SMILES C=C5CC[C@]4({28}C(=O)O)CC[C@]3(C)/C(=C\CC2[C@@]1(C)CC{3}[C@H](O)[C@](C)(C)C1CC[C@]23C)C4C5 |
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Structure type: oligomer
; 919 [M+Na]+
Trivial name: nudicaucin A
Compound class: triterpenoid glycoside
- Compound ID: 29648
Structure type: oligomer
; 935 [M+Na]+
Trivial name: nudicaucin B
Compound class: triterpenoid glycoside
- Compound ID: 29649
|
b-D-Glcp-(1-28)-+
|
b-D-Glcp-(1-3)-+ |
| |
a-L-Rhap-(1-2)-a-L-Arap-(1-3)-Oleanolic |
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Structure type: oligomer
; 1081 [M+Na]+
Trivial name: nudicaucin C
Compound class: triterpenoid glycoside
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