Oxybisberberine and a process for its production

Details Oxybisberberine and a process for its production Oxybisberberine and a process for its production

1976-08-16

1978-05-02

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260287CF, 260287, 260287D, 260289C, C07D51900

Patent

active

040874265

ABSTRACT:
Berberine and protoberberine analogs thereof are oxidatively dimerized in the presence of a base. Treatment of the dimer with alkanolic anhydrous acid yields the corresponding 8-alkoxyberberine (or protoberberine) phenol betaine which, in turn, may be converted to alpha and beta hydrastine.

REFERENCES:
patent: 3272707 (1966-09-01), Tedeschi
patent: 3426027 (1969-02-01), Muller
patent: 3920665 (1975-11-01), Shimada et al.
Shamma, "The Isoquinoline Alkaloids", (1972) pg.285, Academic Press.

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