CHEMICAL CONSTITUENTS OF THE STEMS OF CROTON TOURANENSIS GAGNEP.
Abstract
In the framework of scientific cooperation between the Institute of Chemistry (VAST, Vietnam) and the Institute of Natural Product Chemistry (CNRS, France) on phytochemistry of the Vietnamese flora, the plant Croton touranensis was selected for its cytotoxic activity on KB cell lines (55.9%) inhibition at 1 pg/mL for the EtOAc extract of the stems). From thedicholoromethane extract of the stems of this plant, 5 compounds: kaurenoic acid (1), isofraxidin (2), coniferaldehyde (3), 4-methyl-24-ethylcholest-8(14)-en-3P-ol (4) and 3,4-dihydroxy-5-methoxybenzaldehyde (5) were isolated. Their structures were identified by MS and NMR spectroscopic methods.