(1S,3R)-3-((tert-butoxycarbonyl)amino)-1-isopropylcyclopentane-1-carboxylic acid 、 4-(trifluoromethyl)-1',2',3',6'-tetrahydro-2,4'-bipyridine dihydrochloride 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
三乙胺 作用下,
以
二氯甲烷 为溶剂,
以52%的产率得到tert-Butyl ((1R,3S)-3-isopropyl-3-{[4-(trifluoromethyl)-3',6'-dihydro-2,4'-bipyridin-1'(2'H)-yl]carbonyl}cyclopentyl)carbamate