Lonchocarpus subglauscescens

Only two monoprenylated flavanones have so far been identified from Dorstenia species. As we have mentioned earlier 78 was obtained from the thermal reaction of 4-hydroxylonchocarpin (47). Twigs of D. poinsettifolia yielded dorspoinsettifolin (79). Cyclization of 48 in formic acid and methylation of 78 with diazomethane both readily gave 79. An isomeric compound, 6-methoxyisolonchocarpin, has been reported from Lonchocarpus subglauscescens [61]. 

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See also in sourсe #XX -- [ , ]

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