聚合甲醛 、
(5R)-31-oxo-20-oxa-2,6,11,13-tetrazahexacyclo[19.6.2.12,5.115,19.09,13.024,28]hentriaconta-1(27),9,11,15(30),16,18,21(29),22,24(28),25-decaene-18-carbonitrile 在
sodium cyanoborohydride 、
溶剂黄146 、
N,N-二异丙基乙胺 作用下,
以
甲醇 为溶剂,
以84%的产率得到(5R)-6-methyl-31-oxo-20-oxa-2,6,11,13-tetrazahexacyclo[19.6.2.12,5.115,19.09,13.024,28]hentriaconta-1(27),9,11,15(30),16,18,21(29),22,24(28),25-decaene-18-carbonitrile