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GC-mass spectrometric analysis of 280 samples of Conocephalum conicum, collected in various places showed the presence of three chemo-types. One elaborated (-)-sabinene (type I) as the major compound the second produced (+)-bornyl acetate (type II) and the third contained methyl cinnamate (type III) as the major constituent. The structures of three new monoterpenic esters were established by chemical...
A new chiloscyphane-type sesquiterpenoid, dihydrochiloscypholone, was isolated from the liverwortJungermannia vulcanicola , together with the previously known chiloscypholone. Another collection of J. vulcanicola gave a new labdane-type diterpenoid along with the previously known ent-13-epi-manool. Their structures were determined by extensive NMR techniques and chemical transformation. There are...
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