Efficient one-pot synthesis of anti HIV and antitumor compounds: harman and substituted harmans
摘要:
Anti HIV and antitumor compounds, harman and substituted harmans have been synthesized using electrocyclization reactions as key steps. A one-pot reaction sequence was used to furnish these compounds in good overall yield. (C) 2003 Elsevier Science Ltd. All rights reserved.
Efficient one-pot synthesis of anti HIV and antitumor compounds: harman and substituted harmans
摘要:
Anti HIV and antitumor compounds, harman and substituted harmans have been synthesized using electrocyclization reactions as key steps. A one-pot reaction sequence was used to furnish these compounds in good overall yield. (C) 2003 Elsevier Science Ltd. All rights reserved.
A nickel-catalyzed cross-coupling of alkenyl methyl ethers with Grignard reagents, undermildconditions, is described. These conditions allowed access to various stilbenes and heterocyclic stilbenic derivatives as well as to a potential anticancer agent DMU-212.
The Ni(0)-catalyzed cross-coupling of alkenyl methylethers with boronicesters is described. Several types of alkenyl methylethers can be coupled with a wide range of boronicesters to give the stilbene derivatives.
Efficient one-pot synthesis of anti-HIV and anti-tumour β-carbolines
作者:Radhika S Kusurkar、Shailesh K Goswami
DOI:10.1016/j.tet.2004.04.079
日期:2004.6
Thermal electrocyclisation of the azahexatriene system has been used as a key step for the synthesis of anti-HIV and anti-tumour compounds, harman, derivatives of harman and 1-aryl-beta-carbolines. A one-pot reaction sequence was used to furnish these compounds in good yield. (C) 2004 Elsevier Ltd. All rights reserved.
Sensitized photooxygenations of 3-vinylindole derivatives
作者:Xiaojun Zhang、Saeed I. Khan、Christopher S. Foote
DOI:10.1021/jo00079a032
日期:1993.12
A series of 1-methyl- and 1-(phenylsulfonyl)-substituted 3-vinylindoles with different electronic and steric features has been synthesized and their sensitized photooxygenation in aprotic solvents investigated. 1-Methyl-3-vinyl- (1a), 1,2-dimethyl-3-vinyl- (1b), 1-methyl-3-(beta-methoxyvinyl)- (4-Z and 4-E), 1-(phenylsulfonyl)-3-vinyl- (8a), 1-(phenylsulfonyl)-3-(alpha-methylvinyl) (8b), 1-(phenylsulfonyl)-3-(8-methoxyvinyl)- (8c and 8d), and cis-1-(phenylsulfonyl)-3-(alpha-methyl-beta-methoxyvinyl) indoles (15-Z) react with O-1(2) predominantly to give endoperoxides via [4+2] cycloaddition. However, 1,2-dimethyl-3-(beta-methoxyvinyl)indole (1c) gives [2 + 2] cycloaddition with the 3-double bond to give 1,2-dimethyl-3-formylindole (3c); trans-1-(phenylsulfonyl)-3-(alpha-methyl-beta-methoxyvinyl)indole (15-E) gives the 3-indolyl allylic hydroperoxide (17) via ene reaction, along with a small amount of isomerization of the 3-vinyl double bond. A zwitterionic intermediate in the isomerization is proposed. Most of the resulting dioxacarbazole endoperoxides are isolable and inert to reduction by trimethyl phosphite and thiourea except for N-methyldioxacarbazole 5, which undergoes clean rearrangement to indolin-2-one epoxide 7 at -20-degrees-C.