Summary
Gossypin has been ethylated and hydrolysed. The resulting pentaethyl ether of gossypetin is further methylated and the product converted into tetra-ethyl tambuletin by alkali fission and condensation of the ketonic product with the anhydride and sodium salt ofp-ethoxy benzoic acid. This confirms the relationship between gossypin and tambuletin.
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References
Row and SeshadriProc. Ind. Acad. Sci., A, 1946,23, 140.
Seshadri and VenkateswarluIbid., 1946,23, 209.
Sastri and SeshadriCurr. Sci., 1946,15, 235.
Balakrishna and SeshadriProc. Ind. Acad. Sci., A, 1947,26, 72.
Rao and SeshadriIbid., 1947,25, 397.
Seshadri and VenkateswarluIbid., 1946,23, 29.
Rao and SeshadriIbid., 1946,24, 456.
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Rao, K.V., Seshadri, T.R. Constitution of gossypin. Proc. Indian Acad. Sci. 26, 292 (1947). https://doi.org/10.1007/BF03177540
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DOI: https://doi.org/10.1007/BF03177540