Patent ID: 9650394
Date: 2017-05-16
CPC Classifications: A61K,A61P,C07B,C07D

Claim:
1. A method of producing a compound shown by formula (Y2): or a pharmaceutically acceptable salt thereof, wherein: comprising the following steps: (Step C) reacting a compound shown by formula (X3), wherein: with a compound shown by formula (V3): wherein: to obtain a compound shown by formula (X4): wherein: (Step D) reacting the compound shown by formula (X4) above with (S)-2-aminopropan-1-ol, to obtain a compound shown by formula (X5′): wherein: (Step E) reacting the compound shown by formula (X5′) above with a compound of formula (V6): wherein: to obtain a compound shown by formula (X6′): wherein: (Step F) reacting the compound shown by formula (X6′) above: to obtain the compound shown by formula (Y2) above, or a pharmaceutically acceptable salt thereof, wherein: