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2005
Other natural products
U 0800
Absolute Stereostructures of Acylated Khellactone-Type Coumarins from Angelfurcijuga. — The new coumarins, hyuganoside F (Ic) and hyuganoside I (IIb), are
10- 224 ica
isolated from the leaves of the title plant together with nine coumarins and sugar derivatives including isoepoxypteryxin (IIa). The stereostructure elucidation of these compounds is carried out by means of chemical and physicochemical evidence. In addition,
the absolute configuration of the hitherto uncharacterized methylbutyryl moiety in
hyuganins A (Ib) and C (Ia) is also determined. — (MORIKAWA, T.; MATSUDA, H.;
OHGUSHI, T.; NISHIDA, N.; ISHIWADA, T.; YOSHIKAWA*, M.; Heterocycles 63
(2004) 10, 2211-2215; Kyoto Pharm. Univ., Misasagi, Yamashina, Kyoto 607, Japan;
Eng.) — H. Hoennerscheid
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