simalikalactone/悪性腫瘍

Simalikalactone E (SkE) is a quassinoid extracted from a widely used Amazonian antimalarial remedy. Although SkE has previously been shown to have cytostatic and/or cytotoxic activities in some tumor cell lines, its mechanism of action has not yet been characterized. We show here that SkE in the

BACKGROUND Simalikalactone E (SkE) from Quassia amara, has been proved to be a valuable anti-malarial and anti-cancer compound. As SkE is very scarce, methods of quantitation are needed in order to optimise its isolation process and to determine pharmacokinetic data. OBJECTIVE To validate methods

Growth of Crandall feline kidney cells permanently infected with feline immunodeficiency virus was inhibited by the anti-cancer quassinoid glaucarubolone whereas growth of uninfected cells was not inhibited. Similar results were obtained for human MOLT-4 cells infected with HIV-1. The results

Biopiracy accusations are common in the world of biodiversity research. At the end of 2015, a French NGO accused researchers from the Institut de Recherche pour le Développement (IRD) of biopiracy. These researchers had applied for a patent for a natural bioactive molecule against malaria and

A new antimalarial quassinoid, namely, orinocinolide (1), was isolated from the root bark of Simaba orinocensis, together with the previously reported simalikalactone D (2). The structure of 1 was determined primarily from 1D and 2D NMR analysis, as well as by chemical derivatization. Compound 1 was

Two new sesquiterpenes, leitneridanin A (1) and leitneridanin B (2), and seven known compounds, lirioresinol B, (-)-pinoresinal, (+)-lariciresinol, quassimarin (3), simalikalactone D (4), 1-methoxycanthinone (5), and 5-methoxycanthinone (6), were isolated from Leitneria floridana. Their structures