A facile and efficient synthetic approach to novel lariat macrocyclic diamides and bis macrocyclic diamides
作者:Ashraf A. Abbas、Ahmed H. M. Elwahy、Ahmed A. M. Ahmed
DOI:10.1002/jhet.5570420113
日期:2005.1
two equivalents of the chloroacetyloxy derivative 10 and 2a,b with 1 equiv. of piperazine (12c) afforded the corresponding bismacrocycles 14 and 26a,b respectively, in 60–65% yields. Moreover, the novel bis(macrocycles) 27–29 were prepared in 45–50% yields, respectively, by reacting each of 20a,b with the dipotassium salts 2b, 24 and 25 respectively, in DMF.
通过使双钾盐2a-c与表氯醇(7)和双(氯甲基)衍生物18反应,可以制备40-55%的羟基大环化合物8、19a-c。用DMF中的2-氯乙酰氯(9)对8、19a-c中每个羟基进行酰化反应,得到相应的酯10、20a,b。后者与不同的胺和酚盐的反应分别以60-63%和50-55%的收率专门提供了目标套索状大环化合物13a-c,22a-c和23a-c。胺化两当量的氯乙酰氧基衍生物10和2a,b1当量 哌嗪(12c)分别以60-65%的收率提供了相应的双大环14和26a,b。此外,通过使20a,b中的每一种分别与二钾盐2b,24和25在DMF中反应,分别以45-50%的收率制备了新型双(大环)27-29。