Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1990-03-19
1991-03-26
Chan, Nicky
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549407, C07D31166, C07D31158
Patent
active
050030906
ABSTRACT:
The invention is directed to a process and intermediates for the preparation of benzopyrans such as racemic-6-acetyl-7-[5-(4-acetyl-3-hydroxy-2-propylphenoxy)pentyloxy]-3, 4-dihydro-2H-1-benzopyran-2-carboxylic acid.
REFERENCES:
patent: 4728650 (1988-03-01), Eziri et al.
patent: 4785017 (1988-11-01), Cohen et al.
Manchand Percy S.
Micheli Robert A.
Chan Nicky
Coletti Ellen C.
Gould George M.
Hoffmann-La Roche Inc.
Leon Bernard S.
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