Under biomimetic conditions, oxidation of 5-S-cysteinyldopa (1) to pheomelanins proceeds through the formation of the 1,4-benzothiazine 7 and to a much lesser extent of the acid 6, both arising by the rearrangement with or without decarboxylation of the cyclic quinonimine 3.
Characterisation of 1,4-benzothiazine intermediates in the oxidative conversion of 5-S-cysteinyldopa to pheomelanins / Napolitano, Alessandra; C., Costantini; Crescenzi, Orlando; Prota, Giuseppe. - In: TETRAHEDRON LETTERS. - ISSN 0040-4039. - STAMPA. - 35:34(1994), pp. 6365-6368. [10.1016/S0040-4039(00)73434-4]
Characterisation of 1,4-benzothiazine intermediates in the oxidative conversion of 5-S-cysteinyldopa to pheomelanins.
NAPOLITANO, ALESSANDRA;CRESCENZI, ORLANDO;PROTA, GIUSEPPE
1994
Abstract
Under biomimetic conditions, oxidation of 5-S-cysteinyldopa (1) to pheomelanins proceeds through the formation of the 1,4-benzothiazine 7 and to a much lesser extent of the acid 6, both arising by the rearrangement with or without decarboxylation of the cyclic quinonimine 3.File in questo prodotto:
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