dehydrogenative rearomatization of hydrogenation product and poisoning effect of nitrogen atom, asymmetric hydrogenation of polycyclic nitrogen‐containing heteroaromatics is still a great challenge. Herein, through in situ protection of hydrogenation products with acetic anhydride to inhibit rearomatization and poisoning effect, a novel iridium‐catalyzed enantioselectivehydrogenation of polycyclic nitrogen‐containing
由于氢化产物的脱氢重新芳构化和氮原子的中毒作用,多环含氮杂芳族化合物的不对称氢化仍然是一个巨大的挑战。这里,通过在原位用乙酸酐来抑制rearomatization和中毒效果,多环含氮杂的新型铱-催化的对映选择性氢化的氢化产物保护-吡咯并/吲哚并[1,2一]喹喔啉和菲啶-已经成功可以轻松获得高达98%ee的手性二氢吡咯并/吲哚并[1,2- a ]喹喔啉和二氢菲啶。该策略具有广泛的底物范围,易于操作和潜在的医学应用。
Synthesis, analytical behaviour and biological evaluation of new 4-substituted pyrrolo[1,2-a]quinoxalines as antileishmanial agents
An original series of 4-substituted pyrrolo[1,2-a]quinoxaline derivatives, new structural analogues of Galipea species quinoline alkaloids, was synthesized from various substituted 2-nitroanilines via multistep heterocyclizations and tested for in vitro antiparasitic activity upon Leishmania amazonensis and Leishmania infantum strains. Structure-activity relationships enlighten the importance of the 4-substituted alkenyl side chain on the pyrrolo[1,2-a]quinoxaline moiety to modulate the antileishmanial activity. (c) 2006 Elsevier Ltd. All rights reserved.
Guillon; Dumoulin; Dallemagne, Pharmacy and Pharmacology Communications, 1998, vol. 4, # 1, p. 33 - 38
作者:Guillon、Dumoulin、Dallemagne、Reynolds、Rault
DOI:——
日期:——
Cheeseman, G. W. H.; Hawi, A. A., Journal of Heterocyclic Chemistry, 1983, vol. 20, p. 585 - 590
作者:Cheeseman, G. W. H.、Hawi, A. A.
DOI:——
日期:——
CHEESEMAN, G. W. H.;HAWI, A. A., J. HETEROCYCL. CHEM., 1983, 20, N 3, 585-590