AbstractMyrrhanone A (5S,8R,9R,10R)-3-oxo-8,30-dihydroxypolypoda-13E,17E,21E-triene), a bicyclic triterpene isolated from guggul (Commiphora mukul Hook) gum resin, was found to be a very useful bioactive natural scaffold. The aim of this work is to carry out chemical transformations on myrrhanone A to synthesize some novel pyrimidine hybrids and investigate their anti-inflammatory activity. In vitro
The methanolic extract from guggul-gum resin, the resin of Balsamodendron mukul, was found to inhibit nitric oxide production in lipopolysaccharide-activated mouse peritoneal macrophages (IC50 = 13 mug/mL). From the methanolic extract, three new polypodane-type triterpenes, myrrhanol B and myrrhanones B and A acetate, and a new octanordammarane-type triterpene, epimansumbinol, were isolated together with 17 known compounds including progesterone and the related steroids. The absolute stereostructures of new triterpenes were elucidated on the basis of chemical and physicochemical evidence. The several constituents showed inhibitory effects on nitric oxide production and induction of inducible nitric oxide synthase. (C) 2004 Elsevier Ltd. All rights reserved.
Design, synthesis, anti-inflammatory, cytotoxic and cell based studies of some novel side chain analogues of myrrhanones A & B isolated from the gum resin of Commiphora mukul
Myrrhanones A (1) and B (2), isolated from the gum resin of Commiphora mukul, were reported to exhibit anticancer and anti-inflammatory activities. In view of their interesting skeletal features and biological activities they have been chemically modified by exploiting their side chain functionalities to synthesise 29 diverse analogues. All the synthesized analogues were screened for their cytotoxic