CPC C07D 413/12 (2013.01) | 32 Claims |
1. A method of preparing a compound of Formula (1):
![]() or a salt thereof, comprising:
(i) converting a compound of Formula (7)
![]() to a compound of Formula (6)
![]() (ii) converting the compound of Formula (6) to a compound of Formula (5)
![]() and
(iii) converting the compound of Formula (5) to the compound of Formula (1) or salt thereof.
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