Synthetic Communications p. 3321 - 3331 (1997)
Update date:2022-08-11
Topics:
Kinugawa, Masahiko
Ogasa, Takehiro
Useful 1,4-dihydropyridine unsymmetric dicarboxylates [nitrendipine (1), nicardipine (2)] and monocarboxylic acid 4 were prepared from unsymmetric 2-aminoethyl methyl 1,4-dihydropyridine-3,5-dicarboxylates 2 and 3 via their corresponding quaternary ammonium salts 5-9.
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