The cyclization reaction of the dimethylamides 2b, 5, 6 and 7, resulting from the reaction of mandelic acid with the aminoazirine 1, yields the 6-, 9-, 12- and 15-membered cyclic depsipeptides 10 – 13, respectively.
由
扁桃酸与
氨基
叠氮基1的反应引起的二甲酰胺2b,5、6和7的环化反应分别产生6、9、12、15元环状十肽。