The novel lariat calix[4]-1,3-aza-crowns with chiral amino acids groups as branched chain (5a) and (5b) were synthesized via “1+1” addition of calix[4]-1,3-substituted benzaldehyde derivative (4) and amino acids hydrazide derivatives (3a) and (3b) in yields of 70% and 75%, respectively.
通过萼[4]-1,3-取代
苯甲醛衍
生物 (4) 与
氨基酸酰
肼衍
生物 (3a) 和 (3b) 的 "1+1 "加成,合成了具有手性
氨基酸基团支链的新型萼[4]-1,3-氮杂冠 (5a) 和 (5b),收率分别为 70% 和 75%。