Indaquassin A and B: Quassinoids from Quassia indica

• Published in: Phytochemistry (Oxford) Vol. 34; no. 2; pp. 505 - 509
• Main Authors: Koike, Kazuo, Ohmoto, Taichi
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 01.09.1993; Elsevier
• Subjects: bark; Biological and medical sciences; chemical constituents of plants; Chemical constitution; Fundamental and applied biological sciences. Psychology; Indonesia; medicinal plants; molecular conformation; Plant physiology and development; Quassia; stereochemistry; Indonesia; quassinoid; indaquassin B; Simaroubaceae; indaquassin A; bark; Quassia indica; Molecular structure; Dicotyledones; Angiospermae; Bark; Polycyclic compound; Isolation; Lactone; Spermatophyta
• ISSN: 0031-9422; 1873-3700
• DOI: 10.1016/S0031-9422(05)80099-8

Two novel quassinoids, indaquassins A and B, were isolated from the bark of Quassia indica. Their structures were determined by various 2D NMR analyses. The absolute stereostructures of indaquassins A and B were unambiguously determined by the non-empirical exciton chirality circular dichroism metho...