1-benzyloxy-2-methoxy-4-(2-methoxyvinyl)benzene;(E)- and (Z)-2-(4-benzyloxy-3-methoxyphenyl)-1-methoxyethene;2-methoxy-4-(2-methoxyethenyl)-1-phenylmethoxybenzene
Concise and Diversity-Oriented Route toward Polysubstituted 2-Aminoimidazole Alkaloids and Their Analogues
作者:Denis S. Ermolat'ev、Jitender B. Bariwal、Hans P. L. Steenackers、Sigrid C. J. De Keersmaecker、Erik V. Van der Eycken
DOI:10.1002/anie.201004256
日期:2010.12.3
Alkaloids of the naamine family were synthesized from diverse propargylamines in just two steps (see scheme: R1=Me, R2=substituted benzyl, R3=Ar). Thus, the addition to a propargylamine of a carbodiimide generated in situ, silver(I)‐catalyzed intramolecular hydroamidation, and subsquent deprotection provide access to the heterocyclic core of numerous natural products and biologically active compounds
A Facile and Regioselective Synthesis of Donor-Substituted 2-(2-Halophenyl)acetaldehyde Acetals
作者:Bernhard Wünsch、Sven Nerdinger
DOI:10.1002/ardp.19953280402
日期:——
Starting from vanillin (5a) a facile and high yielding procedure for the preparation of the donor substituted (2‐bromophenyl)‐ and (2‐iodophenyl)acetaldehyde acetals 13c and 16c is described. Homologization of O‐benzylvanillin to obtain the phenylacetaldehyde acetal 15c succeeds by Wittig reaction with the phosphonium chloride 11 and subsequent addition of methanol. 15c is brominated with pyridinium
N-(pyridinylamino) isoindolines and related compounds
申请人:Hoechst Marion Roussel, Inc.
公开号:US06004977A1
公开(公告)日:1999-12-21
Novel N-(pyridinylamino)isoindolines and related compounds, intermediates and processes for the preparation thereof, and methods of relieving memory dysfunction and treating depression utilizing the N-(pyridinylamino)isoindolines and related compounds, the intermediates or compositions thereof are disclosed.
Synthetic studies of decursivine derivatives: preparation of key indole alkaloids via α-hydroxyalkylation
作者:Fumihiro Ito、Kentaro Yamaguchi
DOI:10.1016/j.tet.2012.03.026
日期:2012.5
2-Hydroxyacetyl indole modified at C-3 position was prepared with an eye to developing a total synthesis of decursivine derivatives (decursivine, serotobenine, moschaminindolol, and flavumindole). The indole was prepared through a sequence of oxalyl chloride introduction at C-3 position of indole and acid chloride reduction with tributyltin hydride. In addition, we report a novel synthesis of fully functionalized Uhle's ketone via ortho-selective alpha-hydroxyallcylation. (C) 2012 Elsevier Ltd. All rights reserved.