Synthesis of substituted pterocarpans

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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C07D31178

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057213712

ABSTRACT:
The present invention provides a method of synthesizing compounds of formula (I): ##STR1## wherein R.sub.1 and R.sub.3 are independently H or (C.sub.1 -C.sub.4)alkyl--O--;

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