Molecules

Total Syntheses of (±)-Gusanlung A,(±)-Gusanlung D and 8-Oxyberberrubine and the Uncertainty Concerning the Structures of (-)-Gusanlung A,(-)-Gusanlung …

S Nimgirawath, P Udomputtimekakul, T Apornpisarn…

文献索引：Nimgirawath, Surachai; Udomputtimekakul, Phansuang; Apornpisarn, Thitima; Wanbanjob, Asawin; Taechowisan, Thongchai Molecules, 2009 , vol. 14, # 2 p. 726 - 737

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被引用次数: 2

摘要

Abstract:(±)-Gusanlung A, 8-oxyberberrubine and (±)-gusanlung D have been synthesized by radical cyclisation of the corresponding 2-aroyl-1-methylenetetra-hydroisoquinolines. The 1 H and 13 C spectra of (-)-gusanlung D were found to be different from those of synthetic (±)- gusanlung D. Careful analyses of the 13 C spectra of (–)-gusanlung A and natural 8- oxyberberrubine also cast doubt on the correctness of the structures previously assigned ...