Two-Step Labeling of Endogenous Enzymatic Activities by Diels-Alder Ligation
作者:Lianne I. Willems、Martijn Verdoes、Bogdan I. Florea、Gijsbert A. van der Marel、Herman S. Overkleeft
DOI:10.1002/cbic.201000280
日期:——
Double labeling: A Diels–Alder‐based ligation strategy for activity‐based profiling of endogenously expressed proteases by using a panel of diene‐derivatized probes and a dienophile‐functionalized fluorescent tag has been developed. This procedure is fully orthogonal with respect to the Staudinger–Bertozzi ligation, thus allowing both methods to be used in the same sample to independently label two different
Fluorosulfonic acid compound, process for producing the same, and use thereof
申请人:Adachi Kenji
公开号:US20060252961A1
公开(公告)日:2006-11-09
The present invention provides novel fluorosulfonic acids and salts thereof having greater stability and higher acidity than conventional fluorosulfonic acids; and synthetic intermediates thereof. The invention also provides processes for producing novel fluorosulfonic acids from which various derivatives can be easily synthesized; and uses of these fluorosulfonic acids. Specifically, the invention provides a compound represented by formula (1):
R—S(═O)
n
—CF
2
—SO
3
H (1)
wherein R is a group bound to an adjacent sulfur atom through a carbon atom, examples of R being an optionally substituted alkyl group, an optionally substituted haloalkyl group, an optionally substituted alkenyl group, an optionally substituted haloalkenyl group, an optionally substituted alkynyl group, an optionally substituted haloalkynyl group, an optionally substituted cycloalkyl group, etc.; and n is 1 or 2. The invention also provides salts of such a compound, etc.
本发明提供了新型氟磺酸及其盐,其比传统氟磺酸具有更高的稳定性和酸度;以及其合成中间体。该发明还提供了从中可以轻松合成各种衍生物的新型氟磺酸的生产方法;以及这些氟磺酸的用途。具体而言,该发明提供了由下式表示的化合物:
R—S(═O)
n
—CF
2
—SO
3
H (1)
其中R是通过碳原子与相邻硫原子结合的基团,R的示例包括可选择取代的烷基基团、可选择取代的卤代烷基基团、可选择取代的烯基基团、可选择取代的卤代烯基基团、可选择取代的炔基基团、可选择取代的卤代炔基基团、可选择取代的环烷基基团等;n为1或2。该发明还提供了该化合物的盐等。
Investigations into nicotinic acetylcholine receptor (nAChR) antagonists: synthesis of a sub-unit of methyllycaconitine
作者:Lynn C. Baillie、John R. Bearder、John A. Sherringham、Donald A. Whiting
DOI:10.1039/a704447j
日期:——
A potentially toxophoric subunit of methyllycaconitine has been
synthesised from penta-1,4-dien-3-ol in 14 steps and 5% overall
yield.
switching oligonucleotides. With the aim of assessing the effect of covalently linking Retro-1 to the biologically active oligonucleotide, three different derivatives of Retro-1 were prepared that incorporated a phosphoramidite group, a thiol or a 1,3-diene, respectively. Retro-1–oligonucleotide conjugates were assembled both on-resin (coupling of the phosphoramidite) and from reactions in solution (Michael-type
[EN] HYDROCARBON SYNTHESIS METHODS, APPARATUS, AND SYSTEMS<br/>[FR] PROCÉDÉS, APPAREIL ET SYSTÈMES DE SYNTHÈSE D'HYDROCARBURES
申请人:MCNEFF CLAYTON V
公开号:WO2014008355A1
公开(公告)日:2014-01-09
Embodiments of the invention include apparatus and systems for hydrocarbon synthesis and methods regarding the same. In an embodiment, the invention includes a process for creating a hydrocarbon product stream comprising reacting a reaction mixture in the presence of a catalyst inside of a reaction vessel to form a product mixture, the reaction mixture comprising a carbon source and water. The temperature inside the reaction vessel can be between 450 degrees Celsius and 600 degrees Celsius and the pressure inside the reaction vessel can be above supercritical pressure for water. In an embodiment, the invention includes an extrusion reactor system for creating a hydrocarbon product stream. The temperature inside the extrusion reactor housing between 450 degrees Celsius and 600 degrees Celsius. Pressure inside the reaction vessel can be above supercritical pressure for water. Other embodiments are also included herein.