51321-79-0Relevant articles and documents
A new, efficient, two step procedure for the preparation of the antineoplastic agent sparfosic acid
Morris, Angela D.,Cordi, Alex A.
, p. 1259 - 1266 (2007/10/03)
Sparfosic acid can easily be prepared in two steps and in excellent yield from condensation of the commercially available starting materials L-aspartic acid di-tert-butyl ester hydrochloride and diethylphosphonoacetic acid, followed by a quadruple deprotection of acidic functions under mild conditions using bromotrimethylsilane.
Preparation of N-(phosphonoacetyl)-L-aspartic acid
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, (2008/06/13)
Improved methods for preparation of the tetrasodium and disodium salts ofN-(phosphonoacetyl)-L-aspartic acid (PALA) are disclosed. The present methods are well suited for preparation of these products in large amounts. Particular aspects of these methods include: (1) the initial preparation of phosphonoacetyl chloride which is employed in producing the desired products; and (2) the use of anhydrous conditions for preparation and isolation of the cyclohexylammonium salt of dibenzyl PALA.