1-Hydroxy-8-methyl-1,4,8-triazaspiro[4.5]decan-2-one and its (±)-3-methyl homologue: regioselective synthesis and in vivo evaluation as adjuvants in leukemia chemotherapy

Condensation of glycine and dl-alanine hydroxamic acids with 1-methyl-4-piperidone regioselectively gave the corresponding titled spiro piperidine hydroxyimidazolidinones capable of enhancing sensitivity of P388 and L1210 leukemias in mice models to the known anticancer drugs cisplatin and cyclophosphamide.