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Novel maytansinol compound and its preparation

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专利汇可以提供Novel maytansinol compound and its preparation专利检索,专利查询,专利分析的服务。并且NEW MATERIAL:A maytansinoid compound of formula I: [X is H or Cl; R
1 and R
2 are (substituted) hydrocarbon or heterocyclic rings; R
1 and R
2 may form a heterocyclic ring with the adjacent N atom].
EXAMPLE: Maytansinol 3-N-phenylcarbamate.
USE: Antitumor agents and antifungals, capable of prolonging the survival time of cancerated warm-blooded animals, having a powerful mitosis inhibitory actions, and usable for treating plant diseases due to the antifungal and antiprotozoan actions.
PROCESS: Maytansinol or dechloromaytansinol is carbamoylated with a compound of formula II: (Z is halogen) in a solvent in the presence of a base to give the compound of formula I. The starting material can be obtained by reducing ansamitocins of formula III: (R
3 is acetyl group, etc.) which are metabolites of microorganisms of the genus Nocardia.
COPYRIGHT: (C)1980,JPO&Japio,下面是Novel maytansinol compound and its preparation专利的具体信息内容。

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