7-{[2-(3-tert-Butoxycarbonyl-2-methoxy-phenyl)-1-(2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]dec-4-yl)-ethylcarbamoyl]-methyl}-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester 、
盐酸 在
crude product 作用下,
生成
(R)-2-hydroxy-3-(2-(1,2,3,4-tetrahydroisoquinolin-7-yl)acetamido)-3,4-dihydro-2H-benzo[e][1,2]oxaborinine-8-carboxylic acid