2001 alkaloids

alkaloidsU 0600

51 - 201Regioselective N-Acylation of 3-Arylmethylpiperazine-2,5-diones:Short Synthesis of (-)-Glyantrypine and (-)-Fumiquinazoline F.— Monoacylation of tryptophan-containing anhydrodipeptides (I) with o-azidobenzoyl chloride (II) and following cyclization of the major products(III) by Staudinger reaction provide a short and efficient route for the syn-thesis of pyrazino[2,1-b]quinazoline alkaloids (VI) mentioned in the title.— (HERNANDEZ, FERNANDO; LUMETZBERGER, ASTRID; AVEN-DANO, CARMEN; SOELLHUBER, MONICA; Synlett (2001) 9, 1387-1390;Dep. Quim. Org., Fac. Farm., Univ. Complutense, E-28040 Madrid, Spain; EN)

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