4098-05-9Relevant academic research and scientific papers
ASTRAILIENIN A FROM ASTRAGALUS ILIENSIS
Yu-Qun, Chen,Guli, Azi,Yong-Rong, Luo
, p. 1941 - 1943 (2007/10/02)
A new triterpenoid glycoside, astrailienin A, was isolated from the roots of Astragalus iliensis.By heterogenous acid hydrolysis an aglycone was obtained which was identified as cycloastragenol.On the basis of spectral analysis and chemical reactions, the structure of the new compound was assigned as the 3-O-2)>-β-D-glucopyranoside of cycloastragenol.
FLAVONOID GLYCOSIDES OF THE ROOTS OF GLYCYRRHIZA URALENSIS
Nakanishi, Tsutomu,Inada, Akira,Kambayashi, Kazuko,Yoneda, Kaisuke
, p. 339 - 342 (2007/10/02)
The structure of a flavanone glycoside from the roots of Glycyrrhiza uralensis has been confirmed as 4'-O- 2)-β-D-glucopyranosyl>liquiritigenin.In addition, two known flavonoid glucosides, ononin (a minor component) and liquiritin (a major component) were isolated from the same extract. - Key Word Index - Glycyrrhiza uralensis; Leguminosae; licorice roots; water extract; flavonoid glycosides; ononin; liquiritin; 4'-O-2)-β-D-glucopyranosyl>liquiritigenin.
Studies on the Constituents of Aceraceae Plants. V. Two Diarylheptanoid glycosides and an Arylbutanol Apiosylglucoside from Acer nikoense
Nagai, Masahiro,Kubo, Masayoshi,Takahashi, Kunio,Fujita, Masao,Inoue, Takao
, p. 1923 - 1928 (2007/10/02)
From the stem bark of Acer nikoense Maxim. (Aceraceae), three glycosides were isolated, namely aceroside III (1), C30H40O12, mp 138-141 deg C, D -98.4 deg, aceroside VI (2), C25H32O8*1/2H2O, mp 124-125 deg C, D -69.3 deg, and apiosylepirhododendrin (3), amorphous film (C21H32O11), D -59.5 deg.On acid hydrolysis, 1 yielded acerogenin A (4), apiose, glucose, and a partially hydrolyzed product 2, while 3 afforded (+)-rhododendrol (11), apiose, and glucose.Inspection of the carbon-13 nuclear magnetic resonance (13C NMR) and the PRFT-NMR spectra of 1 and 3 disclosed that they are apiosyl-(1->6)-glucosides.The proton nuclear magnetic resonance (1H NMR) spectral data of their permethylates (6 and 12) and the analytical data of methanolysis products of 6 and 12 established the structures of 1, 2 and 3 as acerogenin A 11-O-β-D-apiofuranosyl-(1->6)-β-D-glucopyranoside, acerogenin A 11-O-β-D-glucopyranoside and (+)-rhododendrol 2-O-β-D-apiofuranosyl-(1->6)-β-D-glucanopyranoside, respectively.Keywords - Acer nikoense; Aceraceae; diarylheptanoid; arylbutanol; apiosylglucoside; aceroside (III, VI); apiosylepirhododendrin; (+)-rhododendrol; PRFT-NMR
Steroid Saponins and Sapogenins of Underground Parts of Trillium kamtschaticum PALL. III. On the Structure of a Novel Type of Steroid Glycoside, Trillenoside A, an 18-Norspirostanol Oligoside
Nohara, Toshihiro,Komori, Tetsuya,Kawasaki, Toshio
, p. 1437 - 1448 (2007/10/02)
A glycoside, mp 209-220 deg C (decomp), D -142 degree, C47H70O24, named trillenoside A (I), was isolated from the rhizomes of Trillium kamtschaticum PALL (Liliaceae).The structure of its aglycone (designated trillenogenin, II), mp 250-251 deg C, D -198 degree, C26H36O8, was determined by X-ray crystallographic analysis of the tetraacetyl monobrosyl derivative, mp 242-244 deg C (dec.), D -112 degree, C40H47BrO14S, and I was characterized as 15-oxo-18-nor-25R-spirosta-5,13-diene-1β,3β,21,23α,24β-pentaol-1-O-β-D-apiofuranosyl-(1->3)-α-L-rhamnopyranosyl-(1->2)-3)>-α-L-arabinopyranoside.I is thus a novel type of steroid glycoside, noteworthy in that the aglycone is an 18-nor-spirostane derivative having an enone system in the D-ring and hydroxyl groups at C21 and in the F-ring, and also in that the sugar moiety is a branched-chain tetrasaccharide containing apiose.Keywords - trillenoside A; 15-oxo-18-nor-spirostadiene-pentaol tetraglycoside; Trillium kamtschaticum PALL; structure determination; trillenogenin; X-ray analysis
