Browsing by Author "Valderrama Guerrero, Jaime Adolfo"
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Pessoa Mahana, Hernán; Pessoa, D.; Salazar González, Ricardo Andrés; Valderrama Guerrero, Jaime Adolfo; Sáez, Edmundo; Araya Maturana, Ramiro (GEORG THIEME VERLAG KG, 2004-02-18)The syntheses of 2-(2-nitrophenyl)-1-benzoyl-1H-benzimidazole derivatives 5-9 and their reduction to the corresponding 2-benzimidazoylbenzamides 10-13 are described. Compounds 10-13 were cleanly and efficiently converted ...
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Pessoa, D.; Valderrama Guerrero, Jaime Adolfo; Olmos, María G.; Espinoza, Omar; Pessoa Mahana, Hernán; Rojas de Arias, Antonieta; Nakayama, Héctor; Torres, Susana; Miret, Jorge (FREUND PUBLISHING HOUSE LTD, 2002)A series of 2-alkoxycarbonylbenzo[b]thiophene-4,7-quinones (11-15), prepared from the corresponding acid 5, were tested in vitro against trypomastigote form of Trypanosome cruzi. The influence of the lypophilia and oxidant ...
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Studies on quinones.209 a convenient approach to the synthesis of 2-acetonylpyranonaphuthoquinones Saitz Barría, Claudio; Valderrama Guerrero, Jaime Adolfo; Tapia, R. (MARCEL DEKKER INC, 1990)a SHORT AND EFFICIENT SYNTHESIS OF 2-ACETONYLPYRANONAPHTHOQUINONES (13 AND 14) STARTING FROM MICHAEL ADDUCT 5 IS DESCRIBED
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Pessoa Mahana, Hernán; Valderrama Guerrero, Jaime Adolfo (MARCEL DEKKER INC, 2000)The synthesis of 6-hydroxy-7-nitro-1-benzazepine-2-one 7 from 5-hydroxy-1 -tetralone 1 and 6-hydroxy-1 -benzazepine-2-one 2 is described. Bromination of 6-hydroxy- 1-benzazepine-2-one 2 with NBS in ethyl acetate afforded ...
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Saitz Barría, Claudio; Valderrama Guerrero, Jaime Adolfo; Tapia, R.; Fariña, Francisco; Paredes, M. Carmen (MARCEL DEKKER INC, 1992)The synthesis of pyranoquinone 6 and its application to the elaboration of pyranonaphthoquinone 1b is described.