An efficient method for preparing methylthiomethyl p-tolyl sulfone was accomplished by the Pummerer reaction of dimethyl sulfoxide with aceticanhydride followed by treatment of the resulting acetoxymethyl methyl sulfide with sodium p-toluenesulfinate in the presence of sodium acetate in acetic acid.
Synthesis and characterization of novel 1-[(2-hydroxyethoxy)methyl]-6-(phenylthio)thymine (HEPT) and dihydro-alkylthio-benzyloxopyrimidine (S-DABO) analogs containing a benzo[d]thiazol moiety
作者:N. M. Khalifa、E. S. Nossier、M. A. Al-Omar、A. E. Amr
DOI:10.1134/s107036321602033x
日期:2016.2
A series of novel dihydro-alkylthio-benzyloxopyrimidine (S-DABO) and 1-[(2-hydroxyethoxy) methyl]-6-(phenylthio)thymine (HEPT) analogs bearing a (benzo[d]thiazol-2-yl)methyl moiety at the C6 position of the pyrimidine core have been synthesized. 5-Allyl-6-(benzo[d]thiazol-2-yl)methyl}-2-thiouracil and 5-allyl-6-(benzo-[d]thiazol-2-yl)methyl}uracil were alkylated to give, respectively, S2- and N1-
一系列带有(苯并[ d ]噻唑-2-基)甲基的新型二氢-烷硫基-苄基氧嘧啶(S-DABO)和1-[((2-羟基乙氧基)甲基] -6-(苯硫基)胸腺嘧啶(HEPT)类似物已经合成了嘧啶核的C 6位上的部分。5-烯丙基-6-(苯并[ d ]噻唑-2-基)甲基} -2-硫尿嘧啶和5-烯丙基-6-(苯并-[ d ]噻唑-2-基)甲基}尿嘧啶被烷基化为分别给出S 2-和N 1-乙氧基甲基和-甲基硫代甲基尿嘧啶衍生物。还通过S 2用溴乙酸甲酯将5-烯丙基-6-[(苯并[ d ]噻唑-2-基)甲基] -2-硫尿嘧啶烷基化,并水解成相应的酸。
Synthesis of New MKC-442 Analogues Containing Alkenyl Chains or Reactive Functionalities at C-5
作者:Lene Petersen、Thomas H. Hansen、Nagy M. Khalifa、Per T. Jørgensen、Erik B. Pedersen、Claus Nielsen
DOI:10.1007/s007060200072
日期:2002.7
interaction between HIV-1 reverse transcriptase (RT) and MKC-442 analogues, a new series of compounds was synthesized and evaluated for inhibition of HIV-1 replication. The modifications include bulky alkenyl substituents at the C-5 position of the uracil ring. Analogues with reactive centers (aldehyde and epoxide functionalities) at C-5 were also synthesized in an attempt to develop HIV drugs with improved
t-Butyl bromide-activated dimethyl sulphoxide reacted with carboxylicacids and differently N-protected aminoacids in the presence of a base (NaHCO3 or Et3N). High to quantitative yields of methylthiomethyl (MTM) esters were obtained in all cases without interference by other functional groups or racemization. The mechanism of the reaction is discussed on the basis of the products formed, of spectral
t-Butyl bromide was found to be a particularly effective ‘activator’ of dimethylsulphoxide in reactions with nucleophiles (carboxylic acids, benzyloxycarbonyl N-protected amino-acids, and phenols) in the presence of NaHCO3 at room temperature.