Isolation and synthesis of trans- and cis-(−)-clovamides and their deoxy analogues from the bark of Dalbergia melanoxylon
作者:Fanie R. Van Heerden、E. Vincent Brandt、David G. Roux
DOI:10.1016/s0031-9422(00)82207-4
日期:1980.1
Abstract N -(3′,4′-Dihydroxy- trans -cinnamoyl)-3-(3,4-dihydroxyphenyl)- L -alanine [(−)-clovamide], the major phenolic metabolite (0.1%) in the bark of Dalbergia melanoxylon , is associated with minor proportions of its cis -isomer, and similar pairs of geometrical isomers of their deoxy analogues N -(4′-hydroxycinnamoyl)-3-(3,4-dihydroxyphenyl)- L -alanine and N -(4′-hydroxycinnamoyl)-3-(4-hydroxyphenyl)-
摘要 N -(3',4'-Dihydroxy-trans-cinnamoyl)-3-(3,4-dihydroxyphenyl)-L-丙氨酸 [(-)-clovamide],树皮中的主要酚类代谢物 (0.1%) Dalbergia melanoxylon 与其脱氧类似物 N -(4'-羟基肉桂酰基)-3-(3,4-二羟基苯基)- L -丙氨酸和 N -( 4'-羟基肉桂酰基)-3-(4-羟基苯基)-L-丙氨酸。(-)- 反式-氯洛酰胺是通过咖啡酸的酰氯与左旋多巴直接缩合合成的。记录了这些化合物的诊断 CD 谱和 (-)-反式和 (-)- 顺式氯洛酰胺的 13 C 谱。