HETEROCYCLES
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Paper | Regular issue | Vol 29, No. 3, 1989, pp.497-509
Published online, 1st January, 1970■ An Imprived Synthesis of 2-Carbamoyloxymethyl-1,4-dihydropyridine
Published online, 1st January, 1970
DOI: 10.3987/COM-89-4808
■ An Imprived Synthesis of 2-Carbamoyloxymethyl-1,4-dihydropyridine
Kunio Suzuki,* Ryosuke Ushijima, Tetsuji Myiano, and Susumu Nakagawa
*Okazaki Research Laboratories, Banyu Pharmaceutical Co., Ltd., 3-9-1, Kamimutuna, Okazaki, Aichi 444, Japan
Abstract
A new synthesis of 3-amino-4-carbamoyloxybutenoic esters by conjugate addition of ammonia to 4-carbamoyloxy-2-butynoic esters is reported. Numerous dihydropyridines were prepared from the resulting 3-aminobutenoates by condensation with benzylideneacetoacetates.
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