Regioselective C-2 and C-6 Substitution of (<i>S</i>)-Nicotine and Nicotine Derivatives
作者:Florence C. Février、Emilie D. Smith、Daniel L. Comins
DOI:10.1021/ol052196j
日期:2005.11.1
[reaction: see text] Regioselective deprotonations of (S)-nicotine and derivatives at the C-2 and C-6 positions of the pyridine ring were performed in good to excellent yields. These methodologies allow the direct introduction of a plethora of functional groups onto the pyridine ring of nicotine.
Preparation and Regioselective Magnesiation or Lithiation of Bis(trimethylsilyl)methyl-Substituted Heteroaryls for the Generation of Highly Functionalized Heterocycles
作者:Thomas Klatt、Veronika Werner、Marina G. Maximova、Dorian Didier、Yitzhak Apeloig、Paul Knochel
DOI:10.1002/chem.201500627
日期:2015.5.18
A wide range of bis(trimethylsilyl)methyl (BTSM)‐ substituted heteroaryl derivatives has been prepared by using Kumada–Corriu or Negishi cross‐coupling reactions. The regioselective lithiation or magnesiation of these building blocks bearing a bulky BTSM group by using magnesium or lithium 2,2,6,6‐tetramethylpiperidide bases followed by quenching reactions with different electrophiles provides various
SYNTHESIS AND REGIOSELECTIVE SUBSTITUTION OF 6-HALO-AND 6-ALKOXY NICOTINE DERIVATIVES
申请人:Comins Daniel L.
公开号:US20070232665A1
公开(公告)日:2007-10-04
The present invention provides active compounds for modulating nicotinic acetylcholine receptors and methods of making the same. The methods of preparing the active compounds utilize different intermediate compounds.
The present invention provides compositions comprising a conjugate of a hapten with a carrier in an ordered and repetitive array, and methods of making such compositions. The conjugates and compositions of the invention may comprise a variety of haptens, including hormones, toxins and drugs, especially drugs of addiction such as nicotine. Compositions and conjugates of the invention are useful for inducing immune responses against haptens, which can use useful in a variety of therapeutic, prophylactic and diagnostic regimens. In certain embodiments, immune responses generated using the conjugates, compositions and methods of the present invention are useful to prevent or treat addiction to drugs of abuse and the resultant diseases associated with drug addiction.