4871-87-8Relevant academic research and scientific papers
Ebenamariosides A-D: Triterpene glucosides and megastigmanes from the leaves of diospyros maritima
Aramoto, Mitsunori,Inagaki, Masanori,Kawakami, Susumu,Matsunami, Katsuyoshi,Miura, Erika,Nishimura, Motohiro,Nobe, Ayaka,Otsuka, Hideaki
, p. 1337 - 1346 (2019/12/23)
The 1-BuOH-soluble fraction of the methanol (MeOH) extract of Diospyros maritima was separated by chromatographic techniques to give three new oleanane-type and one new ursane-type triterpene glucoside, named ebenamariosides A-D (1-4); two megastigmanes were also isolated. The structures of triterpene glucosides was elucidated with extensive investigation by one and two dimensional NMR spectroscopy and the structures were confirmed by partial enzymatic hydrolyses to give the corresponding mono-glucosides and aglycones. The structures of the megastigmanes, including their absolute stereochemistries, were elucidated by spectroscopic evidence and by the modified Mosher's method. Two megastigmanes were chemically correlated and their absolute structures were unambiguously determined. The cytotoxicity of the triterpene glucosides and their degradation products were assayed. They did not show any significant activity.
Saponins from Leaves of Acanthopanax senticosus HARMS., Ciwujia. II. Structures of Ciwujianosides A1, A2, A3 A4 and D3
Shao, Chun-Jie,Kasai, Ryoji,Xu, Jing-Da,Tanaka, Osamu
, p. 42 - 45 (2007/10/02)
Further investigation of the chemical constituents of the leaves of Acanthopanax senticosus HARMS. resulted in the isolation of five new triterpenoid saponins, named ciwujianosides A1 (1), A2 (2), A3 (3), D3 (4) and A4 (5).The structures of these saponins were elucidated as follows: 1, 3-O-β-glucopyranosyl-(1->2)-α-arabinopyranosyloleanolic acid 28-O-α-rhamnopyranosyl-(1->4)-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; 2, 3-O-β-glucopyranosyl-(1->2)-α-arabinopyranosyl-30-norolean-12,20(29)-dien-28-oic acid 28-O-α-rhamnopyranosyl-(1->4)-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; 3, 3-O-α-rhamnopyranosyl-(1->2)-α-arabinopyranosylmesembryanthemoidigenic acid 28-O-α-rhamnopyranosyl-(1->4)-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; 4, 3-O-α-arabinopyranosylmesembryanthemoidigenic acid 28-O-α-rhamnopyranosyl-(1->4)-6-O-acetyl-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester; 5, 3-O-β-glucopyranosyl-(1->2)-α-arabinopyranosylmesembryanthemoidigenic acid 28-O-α-rhamnopyranosyl-(1->4)-6-O-acetyl-β-glucopyranosyl-(1->6)-β-glucopyranosyl ester.Keywords: Acanthopanax senticosus; Araliaceae; saponin; Chinese folk medicine; ciwujianoside; oleanolic acid glycoside; noroleanolic acid glycoside; mesembryanthemoidigenic acid glycoside; ciwujia
