The combination of ring-closing metathesis (RCM) followed by an intramolecular Pauson–Khandreaction gives direct entry to tricyclic compounds. The RCM was carried out on a hexacarbonylcobalt-complexed alkyne, this complex acting as a protecting group against enyne metathesis. The procedure was studied for dienynes containing heteroatoms and allows the building of [6,5,5] and [7,5,5] tricyclic systems
Reductive decyanation of α-cyano and α-alkoxycarbonyl substituted nitriles promoted by samarium(II) iodide
作者:Han-Young Kang、Woo Sang Hong、Yong Seo Cho、Hun Yeong Koh
DOI:10.1016/0040-4039(95)01606-i
日期:1995.10
Decyanation of geminaldinitriles and α-alkoxycarbonyl substituted nitriles promoted by samarium(II) iodide has been efficiently achieved. This method has advantages over the previously known radical route using tin hydride with respect to applicable substrates and the reaction temperature employed. This decyanation could broaden the synthetic applicability of the nitrile derivatives.
作者:Godefridus C. N. van den Aardweg、Ruud H. A. Bosma、Johannes C. Mol
DOI:10.1039/c39830000262
日期:——
Unsaturatednitriles of the general formula CH2CH[CH2]nCN, where n > 1, undergo metathesis at room temperature in the presence of the catalyst Re2O7–Al2O3, activated with a amount of Me4Sn or Et4Sn.
通式CH 2 CH [CH 2 ] n CN的不饱和腈,其中n > 1,在室温下在催化剂Re 2 O 7 -Al 2 O 3的存在下,经一定量的Me 4 Sn活化,进行复分解反应或Et 4 Sn。
[EN] TREATMENT AND PREVENTION OF HBV DISEASES BY CYCLOSPORINE ANALOGUE MOLECULES MODIFIED AT AMINO ACIDES 1 AND 3<br/>[FR] TRAITEMENT ET PRÉVENTION DE MALADIES DU VHB PAR DES MOLÉCULES ANALOGUES DE CYCLOSPORINE MODIFIÉES AU NIVEAU DES ACIDES AMINÉS 1 ET 3
申请人:CONTRAVIR PHARMACEUTICALS INC
公开号:WO2018106928A1
公开(公告)日:2018-06-14
The present application relates to a method of treating and/or preventing a hepatitis B virus (HBV) disease through inhibiting the interaction of CypA with HBV X protein (HBx) and/or Hepatitis B surface antigen (HBsAg), comprising administering to a subject in need thereof a compound of Formula L.
Ionic Liquids for Separation of Olefin-Paraffin Mixtures
申请人:Dai Sheng
公开号:US20110015461A1
公开(公告)日:2011-01-20
The invention is directed to an ionic liquid comprising (i) a cationic portion containing a complex of a silver (I) ion and one or more neutral ligands selected from organoamides, organoamines, olefins, and organonitriles, and (ii) an anionic portion having the chemical formula
wherein m and n are independently 0 or an integer of 1 or above, and p is 0 or 1, provided that when p is 0, the group —N—SO
2
—(CF
2
)
n
CF
3
subtended by p is replaced with an oxide atom connected to the shown sulfur atom. The invention is also directed to a method for separating an olefin from an olefin-paraffin mixture by passing the mixture through a layer of the ionic liquid described above.