358721-33-2Relevant articles and documents
Glochidionionosides A-D: Megastigmane glucosides from leaves of Glochidion zeylanicum (Gaertn.) A. Juss
Otsuka, Hideaki,Kijima, Hidehiko,Hirata, Eiji,Shinzato, Takakazu,Takushi, Anki,Bando, Masahiko,Takeda, Yoshio
, p. 286 - 290 (2003)
Five megastigmane glucosides were isolated from the leaves of Glochidion zeylanicum. One of them was a known compound, blumenol C O-β-D- glucopyranoside (1), and the structures of the four new compounds, glochidionionosides A-D (2-5), were mainly elucidated by spectroscopic methods, including a modified Mosher's method. The absolute configurations of the six-membered ring of glochidionionoside D (5) were deduced by β-D-glucopyranosylation-induced shift trends in the 13C-NMR spectra and confirmed by X-ray analysis as its pbromobenzoate (5b), and the axis chirality of C-7 was determined to be R.
Medicinal foodstuffs. XXIV. Chemical constituents of the processed leaves of Apocynum venetum L.: Absolute stereostructures of apocynosides I and II
Murakami,Kishi,Matsuda,Hattori,Yoshikawa
, p. 845 - 848 (2001)
Two new ionone glucosides, named apocynosides I and II, were isolated from the roasted leaves of Apocynum venetum L. together with nine known compounds. The absolute stereostructures of apocynosides I and II were determined by chemical and physicochemical evidence, which included the application of a modified Mosher's method and the circular dichroism helicity rule.