First Total Synthesis of the 7,3‘-Linked Naphthylisoquinoline Alkaloid Ancistrocladidine
作者:Christopher J. Bungard、Jonathan C. Morris
DOI:10.1021/ol017258u
日期:2002.2.1
[structure: see text] The first total synthesis of the rare 7,3'-linked naphthylisoquinoline alkaloid, ancistrocladidine, has been completed. The key feature of the synthesis is the formation of the extremely hindered biaryl linkage by Pinhey-Barton ortho-arylation of a naphthol with an aryllead triacetate. The biaryl aldehyde formed is elaborated in 10 steps to form a 1:1 mixture of ancistrocladidine
[结构:见正文]稀有的7,3'-连接的萘基异喹啉碱生物碱,顺克拉定已完成了第一个全合成。合成的关键特征是萘酚与三乙酸芳基铅的Pinhey-Barton正芳基化形成极受阻碍的联芳基键。分十步精制形成的联芳基醛,形成顺克拉定和其阻转异构体的1:1混合物。混合物的重结晶提供了顺克拉定,其在所有方面与报道的数据相同。