title: Prokaryotic triterpenoids. 2. 2 beta-Methylhopanoids from Methylobacterium organophilum and Nostoc muscorum, a new series of prokaryotic triterpenoids.
abstract: 2 beta-Methylhopanoids, a new series of triterpenoids was identified from two prokaryotes. 2 beta-Methyldiplopterol was isolated from the methylotrophic bacterium Methylobacterium organophilum, and three different 2 beta-methylbacteriohopanepolyols from the cyanobacterium Nostoc muscorum. The structures of these compounds was deduced by direct comparison with 2 beta-methyldiplopterol synthesized from 22-hydroxyhopan-3-one.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D000458:Cyanobacteria / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008772:Methylococcaceae / Q000032:analysis*; D014315:Triterpenes / Q000138:chemical synthesis / Q000302:isolation & purification*
chemical_list: D014315:Triterpenes