Process for the preparation of sterically uniform, natural 6-thi

Details Process for the preparation of sterically uniform, natural 6-thi Process for the preparation of sterically uniform, natural 6-thi

1978-10-13

1980-10-21

Randolph, John D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 23, C07D33504

Patent

active

042295823

ABSTRACT:
A process for the preparation of racemic 6-thiatetracycline derivatives comprises treating a mixture of epimers of corresponding 1,4,4a,5,5a,6,11,12a-octahydro-3,12-dihydroxy-1,11-dioxo-6-thianaphthacene -2-carboxamides with a saturated heterocyclic secondary amine having a total of 4 to 12 carbon atoms for a sufficient length of time at temperatures of about 15.degree.-120.degree. C.

REFERENCES:
patent: 3988468 (1976-10-01), Rogalski et al.
patent: 4024272 (1977-05-01), Rogalski et al.

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