An Iron-Promoted Aldehyde−Diene Cyclocoupling Reaction
摘要:
[GRAPHICS]A stereospecific intramolecular iron tricarbonyl-promoted aldehyde-diene cyclocoupling reaction was investigated by using simple substrates 6 and more complicated substrates 30a/30b. Demetalation of the initial products converts all complexed dienes to their pure organic counterparts. In addition, the nickel-catalyzed carbonyl-ene reaction and the Prins reaction were investigated with two different substrates.
[EN] COMBINATION OF HEPATITIS B VIRUS (HBV) VACCINES AND PYRIDOPYRIMIDINE DERIVATIVES<br/>[FR] ASSOCIATION DE VACCINS CONTRE LE VIRUS DE L'HÉPATITE B (VHB) ET DE DÉRIVÉS DE PYRIDOPYRIMIDINE
申请人:JANSSEN SCIENCES IRELAND UNLIMITED CO
公开号:WO2020255038A1
公开(公告)日:2020-12-24
Therapeutic combinations of hepatitis B virus (HBV) vaccines and a pyridopyrimidine derivative are described. Methods of inducing an immune response against HBV or treating an HBV-induced disease, particularly in individuals having chronic HBV infection, using the disclosed therapeutic combinations are also described. The invention provides therapeutic combinations or compositions and methods for inducing an immune response against hepatitis B viruses (HBV) infection.
Activation of Remote <i>meta</i>
-C−H Bonds in Arenes with Tethered Alcohols: A Salicylonitrile Template
作者:Lanlan Zhang、Chaoyue Zhao、Yang Liu、Jiancong Xu、Xiufang Xu、Zhong Jin
DOI:10.1002/anie.201705495
日期:2017.9.25
Palladium‐catalyzed activation of remote meta‐C−H bonds in arenes containing tethered alcohols was achieved with high regioselectivity by using a nitrile template. Computational studies on the macrocyclic transition state of the regioselectivity‐determining C−H activation steps revealed that both the C‐N‐Ag angles and gauche comformations of phenyl ether play an extremely important role in the meta selectivity
Piperidinyl and piperazinyl compounds substituted with bicyclo-heterocyclylalkyl groups useful as CCR3 receptor antagonists
申请人:Gong Leyi
公开号:US20050090504A1
公开(公告)日:2005-04-28
Compounds having the Formula (I),
are useful as CCR3 receptor antagonists, wherein Ar is aryl or heteroaryl; Q is —C(═O)— or C
1-2
alkylene; X is N(
+
)R
9a
, or N; Y is CR
9b
, or N; R
2
is hydrogen or alkyl; R
3
and R
4
are as defined in the specification; U
c
is a mono- or bicyclic group as defined in the specification; n is 0 or 1; and p is 0, 1, 2, 3 or 4.
The reaction of secondary homopropargylamines, isocyanides, and water in the presence of a catalytic amount of silver acetate and subsequent purification by chromatography on silica gel afforded substituted proline amides in good to excellent yields. Primary homopropargylamines underwent a cyclizative Ugi–Joullié three-component reaction with isocyanides and carboxylic acids to afford functionalized
4-Amido-2-carboxytetrahydroquinolines. Structure-activity relationships for antagonism at the glycine site of the NMDA receptor
作者:Paul D. Leeson、Robert W. Carling、Kevin W. Moore、Angela M. Moseley、Julian D. Smith、Graeme Stevenson、Tony Chan、Raymond Baker、Alan C. Foster、Sarah Grimwood、John A. Kemp、George R. Marshall、Karst Hoogsteen
DOI:10.1021/jm00089a004
日期:1992.5.1
for in vitro antagonist activity at the glycinesite on the N-methyl-D-aspartate (NMDA) receptor. Optimization of the 4-substituent has provided antagonists having nanomolar affinity, including the urea trans-2-carboxy-5,7-dichloro-4[[(phenylamino)carbonyl]amino]-1,2,3, 4-tetrahydroquinoline (35; IC50 = 7.4 nM vs [3H]glycine binding; Kb = 130 nM for block of NMDA responses in the rat cortical slice),
由5,7-二氯尿嘧啶铅衍生而来的trans-2-Carboxy-5,7-dichloro-4-amidotetrahydroquinolines已合成并测试了N-甲基-D-天冬氨酸甘氨酸位点的体外拮抗剂活性(NMDA)受体。对4-取代基的优化提供了具有纳摩尔摩尔亲和力的拮抗剂,包括尿素反式-2-羧基-5,7-二氯-4 [[((苯基氨基)羰基]氨基] -1,2,3,4-四氢喹啉(35 ; IC50 = 7.4 nM vs [3H]甘氨酸结合; Kb = 130 nM用于阻断大鼠皮质切片中的NMDA反应,这是迄今发现的最有效的NMDA拮抗剂之一。发现结合的绝对立体化学要求是2S,4R,表明与其他甘氨酸位点的NMDA受体配体相同,在α-氨基酸中心需要非天然构型。如X射线晶体学和1 H NMR研究所示,反式2,4-二取代的四氢喹啉系统的优选构型放置了2-羧基伪赤道和4-取代基伪轴。4-酰胺的修饰表