[Studies on the syntheses of heterocyclic compounds. CLXXXVII. Optical resolution of dl-7-O-benzylcoclaurine].
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The chemical behaviours of 4-methyl-2-oxo-2H-benzopyran-7-yl oxoacetyl hydrazine (2) towards some different reagents such as anhydride compounds, aromatic aldehydes, carbon disulphide, and nitrous acid yielded the corresponding pathalazine derivatives (3, 4, 5), hydrazone derivative (6), 1,3,4-oxadiazole derivative (7, 8, 9) and acid azide (10) respectively. Treatment of 10 with absolute alcohols, amines and ethyl amino acid ester gave the corresponding carbamate derivative (11), substituted urea derivative (12) and ethyl substituted alkyl acetate (13) respectively. The biological activity of some synthesized compounds was evaluated.
[reaction in text] A novel photocyclization of tosylstilbenoids is used in the preparation of a cyclopropafuroindolone analogue of the DNA-alkylating unit of the antitumor compound CC-1065.
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