NEW BIS-INDOLE ALKALOIDS AS ANTICANCER DRUGS

摘要

The field of this invention relates to novel cyclopropyl derivatives of the general formula (I) representing pharmaceutically applicable Vinca Rosea type alkaloid compounds, particularly having a cytostatic effect. The invention also is concerned processes for preparing these new alkaloids and their pharmacological compositions and the use of these compounds in treatment of cancer. R stands for a methyl or a formyl group, R1 stands for a methoxy or an amino group, R2 represents a hydroxy or acetoxy group, R3 stands for a hydrogen atom or a hydroxy group, R4 represents a hydrogen atom or R3 and R4 together represent a double bond, R5 and R6 represent hydrogen or fluorine atoms n = 1 or 2.