Prodrug esters of the indolocarbazole CEP-751 (KT-6557) were prepared
with the goal of identifying water soluble, stable but cleavable forms
for intravenous dosing. A dipeptide preform Lys-beta-Ala (16, CEP-256
3/KT-8391) was identified for advancement to clinical trials. (C) 1998
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