An Oxazoline-Mediated Synthesis of the Pyrrolophenanthridine Alkaloids and Some Novel Derivatives
摘要:
An unsymmetrical biaryl coupling between the Grignard of N-benzyl-7-bromoindoline 25 and the appropriately substituted (o-methoxyaryl)oxazoline 15 leads to an intermediate biaryl which can be elaborated in one step to the 1H-pyrrolo[3,2,1-de]phenanthridine ring system. This simple two-step sequence provides general access to the pyrrolophenanthridine alkaloids 2-6.
An Oxazoline-Mediated Synthesis of the Pyrrolophenanthridine Alkaloids and Some Novel Derivatives
摘要:
An unsymmetrical biaryl coupling between the Grignard of N-benzyl-7-bromoindoline 25 and the appropriately substituted (o-methoxyaryl)oxazoline 15 leads to an intermediate biaryl which can be elaborated in one step to the 1H-pyrrolo[3,2,1-de]phenanthridine ring system. This simple two-step sequence provides general access to the pyrrolophenanthridine alkaloids 2-6.
An Oxazoline-Mediated Synthesis of the Pyrrolophenanthridine Alkaloids and Some Novel Derivatives
作者:Richard H. Hutchings、A. I. Meyers
DOI:10.1021/jo951474x
日期:1996.1.1
An unsymmetrical biaryl coupling between the Grignard of N-benzyl-7-bromoindoline 25 and the appropriately substituted (o-methoxyaryl)oxazoline 15 leads to an intermediate biaryl which can be elaborated in one step to the 1H-pyrrolo[3,2,1-de]phenanthridine ring system. This simple two-step sequence provides general access to the pyrrolophenanthridine alkaloids 2-6.