A new 3,4-seco-cycloartane from the leaves ofHopea odorataRoxb.

Abstract

A new 3,4-seco-cycloartane, identified as (24R,25S)-dihydroxy-26-O-nonadecylcarbonyloxy-3,4-secocycloarta-4(28)-en-3-oic acid (1), has been isolated from the leaves of Hopea odorata Roxb. (Dipterocarpaceae), together with the rare 3,4-seco-cycloart-4(28),24-diene-3,26-dioic acid (2 or abiesatrine J) and six other known compounds (3-8). Their structures were elucidated on the basis of both chemical and spectroscopic methods.

Effects of an Endophytic Fungus Umbelopsis dimorpha on the Secondary Metabolites of Host–Plant Kadsura angustifolia

“…Of them, metabolites 1 – 6 belong to schitriterpenoids while 7 – 9 are schinortriterpenoids. Specifically, abiesatrine J ( 3 ) was a rare C-24/C-25 double bond isomer of nigranoic acid ( 1 ) and was only found in two plants, Abies georgei Orr ( Yang et al, 2010 ) and Hopea odorata Roxb ( Satiraphan et al, 2015 ). Henrischinins A-B ( 5 – 6 ) were previously isolated from Schisandra henryi ( Xue et al, 2011 ) and S. chinensis ( Song et al, 2013 ), and reported to have moderate to weak activity against HSV-2 and adenovirus ( Boemke and Tudzynski, 2009 ) and HL-60 cell lines ( Xue et al, 2011 ).…”