Direct Probing Molecular Twist and Tilt in Aromatic Self-Assembled Monolayers
摘要:
Using a nitrile tailgroup as a spectroscopic marker, both twist and tilt of the aromatic backbones in several typical aromatic SAMs on Au(111) have been directly determined in a single experiment. Whereas the exact value of the twist angle depends on the molecular architecture, it was found to be quite noticeable in all SAMs (40-50 degrees) and close to the respective value for aromatic bulk systems (32 degrees).
Compounds of Formula I, and their agriculturally-suitable salts, are disclosed which are useful as arthropodicides ##STR1## wherein R.sup.1 -R.sup.5 and n are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula I and a method for controlling arthropods which involves contacting the arthropods or their environment with an effective amount of a compound of Formula I.
Discovery of Small-Molecule Inhibitors of the ATPase Activity of Human Papillomavirus E1 Helicase
作者:Anne-Marie Faucher、Peter W. White、Christian Brochu、Chantal Grand-Maître、Jean Rancourt、Gulrez Fazal
DOI:10.1021/jm034206x
日期:2004.1.1
The Boehringer Ingelheim compound collection was screened for inhibitors of the ATPase activity of human papillomavirus El helicase to develop antiviral agents that inhibit human papillomavirus (HPV) DNA replication. This screen led to the discovery of (biphenyl-4-sulfonyl)acetic acid 1, which inhibits the ATPase activity of HPV type 6 E1 helicase with a low micromolar IC50 value. A hit-to-lead exercise rapidly converted 1 into a low nanomolar lead series.
Direct Probing Molecular Twist and Tilt in Aromatic Self-Assembled Monolayers
Using a nitrile tailgroup as a spectroscopic marker, both twist and tilt of the aromatic backbones in several typical aromatic SAMs on Au(111) have been directly determined in a single experiment. Whereas the exact value of the twist angle depends on the molecular architecture, it was found to be quite noticeable in all SAMs (40-50 degrees) and close to the respective value for aromatic bulk systems (32 degrees).
A General and Efficient Method for the Synthesis of Silyl-Protected Arenethiols from Aryl Halides or Triflates
作者:Michael Kreis、Stefan Bräse
DOI:10.1002/adsc.200404299
日期:2005.2
An improved palladium-catalyzed synthesis of silyl-protectedarenethiols has been developed. This method is particularly useful because of its experimental simplicity, high generality and high level of functional group toleration. The first synthesis of enantiomerically pure [2.2]paracyclophane-4-thiol was realized employing this method.