11-Hydroxymonocerin from the Plant Endophytic Fungus <i>Exserohilum rostratum</i>
作者:Ruengrit Sappapan、Damrong Sommit、Nattaya Ngamrojanavanich、Somchai Pengpreecha、Suthep Wiyakrutta、Nongluksna Sriubolmas、Khanitha Pudhom
DOI:10.1021/np8004024
日期:2008.9.1
A new analogue of monocerin, 11-hydroxymonocerin (2), along with monocerin (1) and 12-hydroxymonocerin (3) were isolated from Cultures of Exserohilum rostratum, a fungal strain endophytic in Stemona sp. The structure of 2 was determined by analysis of NMR and MS data and by comparison of spectroscopic data to those of 1. Monocerin (1) and 11-hydroxymonoccrin (2) displayed activity against Plasmodium falciparum (K 1, multidrug-resistant strain) with IC50 values of 0.68 and 7.70 mu M, respectively. None of the compounds were cytotoxic against any of the tumor cell lines tested.