| abstract |
A process for preparing 2-amino malonic acidnderivatives of formula (1):n nwherein A is linear or branched chain alkylene having fromn1 to 10 carbon atoms, R 1 is linear or branched chain alkylnhaving from 2 to 20 carbon atoms, R 2 and R 3 are the same orndifferent, and are lower alkyl or aralkyl, and R 4 is anprotecting group, nwhich process comprises the steps of reducing a compoundnof formula (6):n nwherein A is linear or branched chain alkylene having fromn1 to 10 carbon atoms, R 1 is linear or branched chain alkylnhaving from 2 to 20 carbon atoms, R 2 and R 3 are the same orndifferent, and are lower alkyl or aralkyl, and R 4 is anprotecting group. |