methyl (2S)-2-(tert-butoxy)-2-[(22S)-4,18,22,28-tetramethyl-21,27-dioxa-1,5,7,8-tetraazahexacyclo[26.2.2.1
(6,9).1
(10,14).0
(2,7).0
(15,20)]tetratriaconta-2,4,6(34),8,10(33),11,13,15(20),16,18,24-undecaen-3-yl]acetate 在
甲醇 、 sodium hydroxide 作用下,
反应 3.0h,
以18%的产率得到(2S)-2-(tert-butoxy)-2-[(22S)-4,18,22,28-tetramethyl-21,27-dioxa-1,5,7,8-tetraazahexacyclo[26.2.2.1
(6,9).1
(10,14).0
(2,7).0
(15,20)]tetratriaconta-2,4,6(34),8,10(33),11,13,15(20),16,18,24-undecaen-3-yl]acetic acid