The present application relates to a process for preparing the CGRP-antagonist 1-[N
2
-[3,5-dibromo-N-[[4-(3,4-dihydro-2(1H)-oxoquinazolin-3-yl)-1-piperidinyl]carbonyl]-D-tyrosyl]-L-lysyl]-4-(4-pyridinyl)-piperazine of formula
by means of which this compound can be prepared in large amounts, in high yields and with high purity.
本申请涉及一种制备CGRP拮抗剂1-[N2-[3,5-二
溴-N-[[4-(3,4-二氢-2(1H)-氧
喹唑啉-3-基)-1-
哌啶基]羰基]-D-酪
氨酰]-L-赖
氨酰]-4-(4-
吡啶基)-
哌嗪的方法,通过该方法可以大量、高产率且高纯度地制备该化合物。