Stereoselective Synthesis of 1,4-Benzodiazepines via Photoinduced Decarboxylation of<b><i>N</i></b>-Phthaloylanthranilic Acid Amides
作者:Axel Griesbeck、Wolfgang Kramer、Johann Lex
DOI:10.1055/s-2001-15060
日期:——
phenylalanine, aspartic and glutamic acid) and several annulated (from 2-azetidine and pipecolinic acid, proline and 2-azabicyclo[3.3.0]undecanoic acid) 1,4benzodiazepines 1c–12c in good yields (except for 6c and 7c from acidic amino acids and 9c) and excellent diastereoselectivities. Also quaternary a-amino acids could be applied as demonstrated for the a-amino isobuyrate derivative 8b. Optically active substrates
Synthesis 2001, No. 8, 18 06 2001. 文章标识符:1437-210X,E;2001,0,08,1159,1166,ftx,en;C01101SS.pdf。© Georg Thieme Verlag Stuttgart · 纽约 ISSN 0039-7881 摘要:N-邻苯二甲酰邻氨基苯甲酸与一系列α-氨基酸在碱性条件下发生光化学脱羧反应生成 1,4-苯二氮卓类药物(来自肌氨酸、丙氨酸、缬氨酸) 、亮氨酸、苯丙氨酸、天冬氨酸和谷氨酸)和几种成环化合物(来自 2-氮杂环丁烷和哌啶酸、脯氨酸和 2-氮杂双环[3.3.0]十一烷酸)1,4苯并二氮杂卓 1c-12c,产率高(6c 和 7c 除外来自酸性氨基酸和 9c) 和出色的非对映选择性。如α-氨基异丁酸衍生物8b所证明的,也可以应用季α-氨基酸。光学活性基板9b、10b、10e、12b、和 12e 被转化为具有高