(4-cyano-phenyl)-(5-hydroxy-4-hydroxymethyl-6-methyl-pyridin-3-ylmethyl)-carbamic acid tert-butyl ester 、
3-氰基苄基溴 以gave [5-(3-cyano-benzyloxy)-4-hydroxymethyl-6-methyl-pyridin-3-ylmethyl]-(4-cyano-phenyl)-carbamic acid tert-butyl ester (106) (11.8 g, 68% yield)的产率得到[5-(3-Cyano-benzyloxy)-4-hydroxymethyl-6-methyl-pyridin-3-ylmethyl]-(4-cyano-phenyl)-carbamic acid tert-butyl ester