Process for interconversion of heteroyohimbane alkaloids

Details Process for interconversion of heteroyohimbane alkaloids Process for interconversion of heteroyohimbane alkaloids

1976-07-06

1977-06-14

Todd, G. Thomas

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D49114

Patent

active

040296644

ABSTRACT:
A process is disclosed for the interconversion of alkaloids of the heteroyohimbane group, more particularly of tetrahydroalstonine into raubasine, having the formulae ##STR1## according to which the asymmetry center at C-20 is inverted by several steps involving changes of the ring E structure.

REFERENCES:
patent: 3072664 (1963-01-01), Salkin
patent: 3337561 (1967-08-01), Mueller

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