abstract |
Process for the preparation of 6-hydrazone-pyrido (2,1-b) quinazolin-11-one derivatives of the formula I, e.g. 6-phenyl-hydrazono-11-oxo-6,7,8,9-tetrahydro-11H-pyrido (2,1-b) quinazoline. The compounds of the formula I are intermediates for the preparation of rutecarpine and Tutecarpinanalogen. |