| 摘要 |
<p>A novel intermediate product for use in producing ¢(3-amino-carboxy)-propyl-1)! phosphinic acid derivatives. This product is represented by the formula (V'): < IMG > (V') wherein R1 and R2 are same or different and each represent a straight or branched chain alkyl group having from 1 to 5 carbon atoms, an aryl group selected from the group consisting of phenyl, chlorophenyl, nitrophenyl and methoxyphenyl, or an benzyl group, R3 and R4 are same or different and R3, R4 and R5 each represent a hydrogen atom, a straight or branched chain alkyl group having from 1 to 5 carbon atoms, an aryl group selected from the group consisting of phenyl, chlorophenyl, nitrophenyl and methoxyphenyl, or a benzyl group, provided that R3 and R4 are not hydrogen atoms at the same time. The product (V') may be transformed, without isolation, into the corresponding ¢(3-amino-3-carboxy)-piopyl-1! phosphinic acid derivative by means of a conventional deprotecting method such as hydrolysis.</p> |
