Pyrazolopyrimidine Macrocycles as Inhibitors of Human Immunodeficiency Virus Replication
申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:US20150232481A1
公开(公告)日:2015-08-20
The disclosure generally relates to compounds of formula I, including compositions and methods for treating human immunodeficiency virus (HIV) infection. The disclosure provides novel inhibitors of HIV, pharmaceutical compositions containing such compounds, and methods for making and using these compounds in the treatment of HIV infection.
A simple organocobalt mediated synthesis of substituted 3-oxabicyclo[3.3.0]oct-6-en-7-ones
作者:David C. Billington、Debra Willison
DOI:10.1016/0040-4039(84)80061-1
日期:——
alcohols form ethers with allyl bromide in good yields; conversion of these ethers to the alkyne hexacarbonyl dicobalt complexes using Co2(CO)8, followed by intramolecular cyclisation gives substituted 3-oxabicyclo[3.3.0]oct-6-en-7-ones (4a–4e) in fair to moderate yields.
Rearrangements of silyl- and stannyl-substituted diallyl ethers: competition between the allyl-vinyl ether rearrangement and the [2,3] Wittig sigmatropic rearrangement
作者:T.N. Mitchell、F. Gießelmann、K. Kwetkat
DOI:10.1016/0022-328x(94)05307-w
日期:1995.5
Diallyl ethers containing two trimethylstannyl moieties or one triorganostannyl and one trimetyylsilyl moiety attached to the olefinic carbon atoms of one allyl group can undergo either an allyl-vinyl etherrearrangement or a [2,3] Wittig sigmatropic rearrangement when treated with a strong non-nucleophilic base. While the use of lithium diisopropylamide favours the Wittigrearrangement, lithium diethylamide
Cyclizations in the Addition of Alkylmercury Halides to Dienes and Enynes
作者:Glen A. Russell、Chaozhong Li、Ping Chen
DOI:10.1021/ja9601898
日期:1996.1.1
or CH2CHC(O)OC(Me)2CHCH2. The radicals t-BuCH2CH•C(O)C(Me)2(CH2)nCHCH2 cyclize mainly in the 6-endo mode for n = 1 and more rapidly in the 6-exo mode for n = 2, while the radicals t-BuCH2CH•C(O)OC(Me)2(CH2)nCHCH2 cyclize only in the exo mode for n = 0 or 1 but with a faster rate for 5-exo-cyclization. Gem-dimethyl substitution adjacent to the alkyl oxygen accelerates the 5-exo-cyclization of the ester
将叔丁基卤化汞光刺激加成到 1,6-二烯和烯炔,包括 (CH2CHCH2)2X,其中 X = CH2、C(COEt)2、O 或 NCH2CHCH2,形成由 5-外环化产生的初级烷基卤化汞加合物自由基,t-BuCH2CH•CH2XCH2CHCH2。这些自由基过程的动力学链长度很低,在 Me2SO 中 35 °C 时的范围为 3-7。在光刺激下将 t-BuHgI 添加到 CH2CHP(O)(OR)OCH2CHCH2(R = H 或烯丙基)、CH2CHC(O)N(R)CH2CHCH2(R = Me、Ph 或 CH2CHCH2) 或 CH2CHC(O)OC(Me)2CHCH2。基团 t-BuCH2CH•C(O)C(Me)2(CH2)nCHCH2 在 n = 1 时主要以 6-endo 模式环化,在 n = 2 时以 6-exo 模式更快地环化,而基团 t-BuCH2CH•C(O)OC(Me)2(CH2)nCHCH2
Stable and Surface‐active Co Nanoparticles Formed from Cation (
<i>x</i>
) Promoted Au/
<i>x</i>
‐Co
<sub>3</sub>
O
<sub>4</sub>
(
<i>x</i>
=Cs) as Selective Catalyst for [2+2+1] Cyclization Reactions
作者:Charles O. Oseghale、Batsile M. Mogudi、Oluwatayo Racheal Onisuru、Christianah Aarinola Akinnawo、Dele Peter Fapojuwo、Reinout Meijboom
DOI:10.1002/cctc.202001841
日期:2021.3.5
stable cobalt nanoparticles generated from alkali ion‐promoted gold catalyst for catalyzed carbonylative [2+2+1] cyclization reaction, is described. The gold nanoparticle‘s (AuNPs) role was assumed to dissociate the CO and H2 into atomic species on the catalyst surface by spillover, which in‐situ reduces the robust mesoporous cobalt oxide to metallic cobalt (Co3+→Co2+→Co), as the active catalytic species