Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Patent
1980-12-22
1985-02-19
Coughlan, Jr., Paul M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
C07D47504
Patent
active
045007110
ABSTRACT:
In the synthesis of calcium leucovorin (calcium 5-formyl-5,6,7,8-tetrahydrofolate), the use of an amine base in the conversion of anhydroleucovorin (5,10-methenyl-5,6,7,8-tetrahydrofolic acid) to leucovorin unexpectedly results in a pure (USP) product directly from the reaction mixture.
REFERENCES:
patent: 2741608 (1956-04-01), Shive
Swaringen Roy A.
Wisowaty James C.
Yeowell David A.
Brown Donald
Burroughs Wellcome Co.
Coughlan, Jr. Paul M.
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