Biogenetically patterned synthesis of the spiro[indoline-3,4′-proline] system
Abstract
Reaction of tryptophan with dry formaldehyde under reducing conditions yielded spiro-[N-methylindoline-3,4′-N-methylproline methyl ester].
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J. Chem. Soc. D, 1970, 1605-1606
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Biogenetically patterned synthesis of the spiro[indoline-3,4′-proline] system
J. R. Williams and L. R. Unger, J. Chem. Soc. D, 1970, 1605 DOI: 10.1039/C29700001605
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