Synthesis and Antitumor Activity of Some New 2‐Chloroethylnitrosoureas

Abstract

The synthesis of a series of N‐(2‐chloroethyl)‐N′‐(9H‐xanthen‐9‐yl)‐N‐nitrosoureas and N‐(2‐chloroethyl)‐N′‐(9H‐thioxanthen‐9‐yl)‐N‐nitrosoureas is described. The title compounds were evaluated against NSCLCN6 L16 bronchial epidermoid carcinoma in vitro and some of them were found to be active. N‐(2‐chloroethyl)‐N′‐(2‐methoxy‐9H‐xanthen‐9‐yl)‐N‐nitrosourea (8e) was active against leukemia P388 tumor system in mice. Copyright © 1993 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinhei