Intermediates for the production of picropodophyllin and related

Details Intermediates for the production of picropodophyllin and related Intermediates for the production of picropodophyllin and related

1982-01-19

1987-05-19

Siegel, Alan

Harness for working animal

568644, C07D31744, C07C 4100

Patent

active

046670432

ABSTRACT:
The present invention provides compounds having the structure: ##STR1## wherein R.sup.1 represents alkoxy or aralkoxy, R.sup.2 represents hydrogen, alkoxy, aralkoxy, alkyl, aralkyl, or R.sup.1 and R.sup.2 taken together represent the group --O--CH.sub.2 --O--, R.sup.3 represents hydrogen, alkyl, aralkyl, acyl or a protecting group, Y represents Cl, Br, I or a leaving group, and X represents Cl, Br or I.

REFERENCES:
patent: 2906663 (1959-09-01), Chodroff et al.
patent: 3011941 (1961-12-01), McGrath et al.
patent: 3471570 (1969-10-01), Boesch et al.
patent: 3970703 (1976-07-01), Kitamura et al.

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