TERPENOID COMPOUNDS FROM THE EXTRACTED ETHYL ACETATE OF THE BARK STEM OF PHYLLANTHUS ACIDUS

Tóm tắt

ABSTRACT

Performing thin layer chromatography and column chromatography from the ethyl acetate extraction of the bark stem of Phyllanthus acidus, six terpenoids have isolated, including four diterpenes and two triterpenes. Their names were phyllanthol (1), 19-acetoxy-16a, 17-dihydroxy-ent-kaurane (2), 16a, 17-dihydroxy-ent-kaurane (3), 16a,17-acetonide-3α-hydroxykauran (4), maslinic acid (5) and phyllane A (6). The structures of these compounds were elucidated by nuclear magnetic resonance spectroscopy. This is the first time that compounds 2, 3, 4, and 5 were found in the genus of Phyllanthus.

Keywords: Phyllanthus acidus, kaurene, terpenoid