vinca difformis/抗がん剤

RELATED APPLICATIONS This application is a U.S. National Phase of International Application No. PCT/CN2006/002327, filed Sep. 8, 2006, designating the U.S. and published not in English as WO 2007/028341 on Mar. 15, 2007, which claims the benefit of Chinese application No. 200510098381.2, filed Sep.

BACKGROUND OF THE INVENTION Several naturally-occurring alkaloids obtainable from Vinca rosea have been found active in the treatment of experimental malignancies in animals. Among these are leurosine (U.S. Pat. No. 3,370,057), vincaleukoblastine (vinblastine) to be referred to hereinafter as VLB

BACKGROUND OF THE INVENTION Several naturally-occurring alkaloids obtainable from Vinca rosea have been found active in the treatment of experimental malignancies in animals. Among these are leurosine (U.S. Pat. No. 3,370,057), vincaleukoblastine (vinblastine) to be referred to hereinafter as VLB

BACKGROUND OF THE INVENTION Several naturally-occurring alkaloids obtainable from Vinca rosea have been found active in the treatment of experimental malignancies in animals. Among these are leurosine (U.S. Pat. No. 3,370,057), vincaleukoblastine (vinblastine) to be referred to hereinafter as VLB

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the use of vinca alkaloids in combatting tumors. 2. Discussion of the Background The dimeric alkaloids, vincristine and vinblastine, containing indol-indoline moieties from Catharanthus species are widely used as