合成了大体积过新戊氧基-柱[5]芳烃(Pillar-1),并使用变温1 H NMR 光谱研究了其构象迁移率。研究了Pillar-1和正辛基三甲基六氟磷酸铵 ( OMA )之间的主客体相互作用,并通过 1 H NMR揭示了 1:1 复合物的形成。通过羟基官能化柱[5]芳烃与手性衍生剂( S )-(+)-MTPA-Cl反应合成平面手性异构体。(Sp, R )-和 (Rp, R)-形式的柱[5]芳烃非对映异构体通过HPLC分离,并通过19 F NMR分析它们的结构。HPLC 测量表明,在 40°C 下 72 小时没有发生外消旋化。
合成了大体积过新戊氧基-柱[5]芳烃(Pillar-1),并使用变温1 H NMR 光谱研究了其构象迁移率。研究了Pillar-1和正辛基三甲基六氟磷酸铵 ( OMA )之间的主客体相互作用,并通过 1 H NMR揭示了 1:1 复合物的形成。通过羟基官能化柱[5]芳烃与手性衍生剂( S )-(+)-MTPA-Cl反应合成平面手性异构体。(Sp, R )-和 (Rp, R)-形式的柱[5]芳烃非对映异构体通过HPLC分离,并通过19 F NMR分析它们的结构。HPLC 测量表明,在 40°C 下 72 小时没有发生外消旋化。
The present disclosure describes novel silylated heteroaromatic derivatives, including those prepared by methods comprising the use of hydrosilanes and at least one strong base, the definition of strong base now also including hydroxide, especially KOH.
Quast, Helmut; Schulze, Johannes, Liebigs Annalen der Chemie, 1990, # 6, p. 509 - 512
作者:Quast, Helmut、Schulze, Johannes
DOI:——
日期:——
LINKED DIIMIDAZOLE DERIVATIVES
申请人:Qiu Yao-Ling
公开号:US20100226883A1
公开(公告)日:2010-09-09
The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof:
which inhibit RNA-containing virus, particularly the hepatitis C virus (HCV). Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
SILYLATION OF AROMATIC HETEROCYCLES BY EARTH ABUNDANT TRANSITION-METAL-FREE CATALYSTS
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:US20180057514A1
公开(公告)日:2018-03-01
The present invention describes chemical systems and methods for silylating aromatic organic substrates, said system or method comprising or consisting essentially of a mixture of (a) at least one organosilane and (b) at least one strong base, the definition of strong base now also including hydroxide, especially KOH, said system being preferably, but not necessarily substantially free of a transition-metal compound, and said methods comprising contacting a quantity of the organic substrate with a mixture of (a) at least one organosilane and (b) at least one strong base, under conditions sufficient to silylate the aromatic substrate.
SILYLATED DERIVATIVES OF AROMATIC HETEROCYCLES
申请人:California Institute Of Technology
公开号:US20190048030A1
公开(公告)日:2019-02-14
The present disclosure describes novel silylated heteroaromatic derivatives, including those prepared by methods comprising the use of hydrosilanes and at least one strong base, the definition of strong base now also including hydroxide, especially KOH.