Asymmetric Synthesis of the Alkaloids mayfoline andN(1)-acetyl-N(1)-deoxymayfoline
作者:Paul Kuehne、Anthony Linden、Manfred Hesse
DOI:10.1002/hlca.19960790417
日期:1996.6.26
The total syntheses of the spermidine alkaloids (−)-mayfoline (11) and (+)-N(1)-acetyl-N(1)-deoxymayfoline (12) are described. These macrocyclic lactams belong to the most interesting conjugates of the polyamine derivatives very commonly found in nature. The enantioselective syntheses were achieved through resolution of the methyl 3-amino-3-phenylpropanoate (2) by recrystallization of its (+)-L-tartrate
描述了亚精胺生物碱(-)-美福林(11)和(+)- N(1)-乙酰基-N(1)-脱氧美福林(12)的总合成。这些大环内酰胺属于自然界中非常常见的多胺衍生物的最令人感兴趣的缀合物。对映选择性的合成是通过对其(+)-L-酒石酸盐进行重结晶而拆分3-氨基-3-苯基丙酸甲酯(2)而实现的。随后通过缩合,还原性环扩展(内部键断裂)以及最后一个涉及第二个环扩展的转酰胺基反应,来构建13元环。