6,18-Dimethyl-12-methylidene-10,14,28,31,34,37-hexaoxa-3,21-diazapentacyclo[36.3.1.123,27.04,9.015,20]tritetraconta-1(42),4(9),5,7,15(20),16,18,23(43),24,26,38,40-dodecaene-2,22-dione 反应 5.0h,
以72%的产率得到7,15-Dimethyl-11-methylidene-3,19,26,29,32,35-hexaoxa-42,43-diazaheptacyclo[34.3.1.12,5.117,20.121,25.04,9.013,18]tritetraconta-1(40),2(43),4(9),5,7,13(18),14,16,20(42),21(41),22,24,36,38-tetradecaene