Synthesis for the preparation of porphobilinogen, the compound as such as stabilized salt and intermediates thereof
申请人:Neier, Reinhard
公开号:EP1357110A1
公开(公告)日:2003-10-29
The invention relates to a new inventive process sequence of steps a) to e) as claimed in Claim 1 for the preparation of porphobilinogen and intermediates per se as important precursors such as 3-[4-methoxycarbonylmethyl-5-(protected amino-methyl)-1 H-pyrrol-3-yl]-propionic acid methyl ester of formula 7
wherein R is a protective group,
and 3-[4-Carboxymethyl-5-(protected amino-methyl)-1 H-pyrrol-3-yl]-propionic acid di-alkali metal salt of formula 8
and especially 3-[4-carboxymethyl-5-(phenylacetyl-amino-methyl)- 1H-pyrrol-3-yl]-propionic acid di-lithium salt of formula 8a
and of carboxylate 4-(2-carboxy-ethyl)-3-carboxymethyl-1H-pyrrrol-2-yl-methyl-ammonium of formula 9
and of phenylacetate 4-(2-carboxy-ethyl)-3carboxymethyl-1 H-pyrrol-2-ylmethyl-ammonium of formula 9a
and the use thereof for the preparation of porphobilinogen.
该发明涉及一种新的创新过程步骤序列,即索权项1中所述的步骤a)至e),用于制备卟啉原卟啉和中间体本身,作为重要的前体,例如式7的3-[4-甲氧羰甲基-5-(保护氨基甲基)-1H-吡咯-3-基]-丙酸甲酯,其中R是保护基,以及式8的3-[4-羧甲基-5-(保护氨基甲基)-1H-吡咯-3-基]-丙酸双碱金属盐,特别是式8a的3-[4-羧甲基-5-(苯乙酰氨基甲基)-1H-吡咯-3-基]-丙酸双锂盐,以及式9的羧酸酯4-(2-羧基乙基)-3-羧甲基-1H-吡咯-2-基-甲基铵,以及式9a的苯乙酸酯4-(2-羧基乙基)-3-羧甲基-1H-吡咯-2-基甲基铵,以及其用于制备卟啉原卟啉的用途。