Method and compositions for identifying anti-HIV therapeutic compounds
申请人:Arimilli N. Murty
公开号:US20050239054A1
公开(公告)日:2005-10-27
Methods are provided for identifying anti-HIV therapeutic compounds substituted with carboxyl ester or phosphonate ester groups. Libraries of such compounds are screened optionally using the novel enzyme GS-7340 Ester Hydrolase. Compositions and methods relating to GS-7340 Ester Hydrolase also are provided.
A method of stabilizing imino-functional silane involving adding thereto at least one Brønsted-Lowry base to inhibit, suppress or prevent the addition reactions of the imino-functional silane with itself to form a imino- and amino-functional silane and the subsequent deamination reactions to form conjugated carbon-carbon double bond-containing imino-functional silanes and stabilized imino-functional silanes containing the at least one Brønsted-Lowry base.
Novel synthesis of 2,2-dialkyl-3-dialkylamino-2,3-dihydro-1H-naphtho[2,1-b]pyrans
作者:Po-Jung Jimmy Huang、T. Stanley Cameron、Amitabh Jha
DOI:10.1016/j.tetlet.2008.10.083
日期:2009.1
(retro-aldol product). This Mannich base then disproportionates into a quinonemethideintermediate and the secondary amine is regenerated. It then forms an enamine intermediate with 2,2-dialkylacetaldehyde (another retro-aldol product). Finally, the quinonemethideintermediate undergoes electrocyclic ring closure with enamines to produce the title compounds.
由2-萘酚,仲胺和3-羟基-2,2-二烷基丙醛制备2,2-二烷基-3-二烷基氨基-2,3-二氢-1 H-萘并[ 2,1- b ]吡喃。催化量p的存在-甲苯磺酸。该一锅法反应涉及3-羟基-2,2-二烷基丙醛的逆醛醇缩合,然后由2-萘酚,仲胺和甲醛(逆醛醇产物)形成曼尼希碱中间体。然后,该曼尼希碱歧化成醌甲基化物中间体,并再生仲胺。然后,它与2,2-二烷基乙醛(另一种逆醛醇产物)形成烯胺中间体。最后,醌甲基化物中间体与烯胺经历电环闭合以产生标题化合物。
A Convenient One-Pot Synthesis of 2,2-Dialkyl-2,3-dihydro-1<i>H</i>-naphtho[2,1-<i>b</i>]pyrans
作者:Amitabh Jha、Po-Jung Huang、Chandrani Mukherjee、Nawal Paul
DOI:10.1055/s-2007-992380
日期:——
This work describes a convenient one-pot procedure for the synthesis of 2,2-disubstituted 2,3-dihydro-1H-naphtho[2,1-b]pyrans i.e. 2,2-disubstituted 1H-benzo[f]chromans} by the reaction of 2-tetralones and α,α-disubstituted β-hydroxy propionaldehydes under acidic conditions.
Synthesis of Substituted 3-Iodocoumarins and 3-Iodobutenolides via Electrophilic Iodocyclization of Ethoxyalkyne Diols
作者:Maddi Sridhar Reddy、Nuligonda Thirupathi、Madala Hari Babu、Surendra Puri
DOI:10.1021/jo400499r
日期:2013.6.21
A convenient and general synthesis of various 4-substituted 3-iodocoumarins and 4,5-disubstituted 3-iodobutenolides is described via an exclusive 6-endo-dig iodocyclization of 3-ethoxy-1-(2-alkoxyphenyl)-2-yn-1-ols and 5-endo-dig iodocyclization of 1-alkoxy-4-ethoxy-3-yn-1,2-diols, respectively. The reaction is carried out under very mild conditions using I2 in CH2Cl2 or toluene at room temperature