C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 63/36 (2006.01) C07C 69/74 (2006.01) C07C 69/76 (2006.01) C07C 231/18 (2006.01) C07C 233/58 (2006.01) C07D 213/55 (2006.01) C07D 221/02 (2006.01) C07D 405/04 (2006.01) C07D 405/06 (2006.01) C07D 413/04 (2006.01) C07C 233/57 (2006.01)
Patent
CA 2327928
This invention relates to a cyclization process useful in the preparation of a key intermediate in the preparation of an endothelin antagonist of formula (I).
L'invention concerne un procédé de cyclisation utile pour préparer un intermédiaire clé pour la production d'un antagoniste d'endothéline représenté par la formule (I).
Song Zhiguo
Tillyer Richard D.
Tschaen David M.
Zhao Mangzu
Merck & Co. Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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