Synthesis of mutagenic amino-.ALPHA.-carbolines A.ALPHA.C and MeA.ALPHA.C by the thermal electrocyclic reaction of 2-azahexa-1,3,5-triene intermediates.
Syntheses of<i>o</i>-Aminohetarenecarbaldehydes via Azides
作者:Jan Becher、Krystian Pluta、Niels Krake、Klaus Brøndum、Nils Just Christensen、Maria Victoria Vinader
DOI:10.1055/s-1989-27307
日期:——
o-Chlorohetarenecarbaldehydes react with sodium azide at low temperature yielding moderately stable o-azidohetarenecarbaldehydes. With hydrogen sulfide these compounds are reduced to the corresponding stable o-amino aldehydes. Both reaction steps give high yields.
Reduction with hydrogen sulfide of heterocyclic o-azidoaldehydes yields the corresponding o-aminocarbothialdehydes as stable crystalline compounds. The reactions are exemplified in the pyrazole and indole series. The o-aminoheteroarencarbothialdehyde give nickel(II) complexes with nickel(II) acetate.
2-Amidinylindole-3-carbaldehydes: synthesis of new tetracyclic compounds containing the pyrrolo[1,2-c]1,4-diazepine ring
作者:Francesca Clerici、Emanuela Erba、Donato Pocar
DOI:10.1016/s0040-4020(03)00146-7
日期:2003.3
2-Amidinylindol-3-carbaldehydes bearing an alpha-alkoxycarbonyl substituent on the cyclic-tertiary amine moiety were prepared. Pyrolysis of these amidines in diethylenglycol-monoethyl ether produced mainly a pyrrolo[ 1',2'-1,2]-1,4-diazepino[5,6-b]indol-7,11-dione. A similar result was obtained starting from 2-amidinylbenzofuran-3-carbaldehyde. (C) 2003 Elsevier Science Ltd. All rights reserved.
HIBINO, SATOSHI;SUGINO, EIICHI;KUWADA, TAKESHI;OGURA, NAOKI;SHINTANI, YOH+, CHEM. AND PHARM. BULL., 39,(1991) N, C. 79-80