OPTICALLY ACTIVE 2-NITROIMIDAZOLE DERIVATIVE, PROCESS FOR PRODUCING THE SAME, AND INTERMEDIATE FOR PRODUCING THE SAME
申请人:POLA CHEMICAL INDUSTRIES, INC.
公开号:EP0632028A1
公开(公告)日:1995-01-04
A highly pure, optically active 2-nitroimidazole derivative that can be used as a concomitant drug for the radiotherapy of various tumors because it has an excellent radiosensitizing effect and a high safety. It can be produced from an inexpensive diester of tartaric acid in a high yield according to reaction scheme (I), wherein R¹ and R², which may be the same or different from each other, represent each an aliphatic or aromatic group, and X represents halogen.
High purity 2-nitroimidazole derivatives having excellent radiosensitivity and high safety and useful as a drug to be used along with radiotherapy of various cancers can be prepared at a high yield from inexpensive diester of tartaric acid according to the following reaction formua, ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each individually represents an aliphatic group or an aromatic group, and X represents a halogen atom.