ACONITINE COMPOUNDS, COMPOSITIONS, USES, AND PREPARATION THEREOF
申请人:Bois Justin Du
公开号:US20120238526A1
公开(公告)日:2012-09-20
Compound derivatives of aconitine are provided, in particular derivatives that modulate the activity of sodium channels. Also provided are pharmaceutical compositions comprising compounds of the invention and a pharmaceutically acceptable carrier. The subject compounds are useful in treatments, including treatments to modulate neuronal activity or to bring about muscular relaxation. The compounds also find use in the treatment of subjects suffering from a voltage-gated sodium channel-enhanced ailment or from pain. Further methods are provided for the preparation of the aconitine derivatives.
I<sub>2</sub> catalyzed tandem protocol for synthesis of quinoxalines via sp<sup>3</sup>, sp<sup>2</sup> and sp C–H functionalization
作者:Kamlesh S. Vadagaonkar、Hanuman P. Kalmode、Kaliyappan Murugan、Atul C. Chaskar
DOI:10.1039/c4ra08589b
日期:——
One-pot, atom-economic synthesis of quinoxalines has been achieved through generation of arylglyoxalfrom easily available ethylarenes, ethylenearenes and ethynearenes, and subsequent condensation with o-phenylenediamines. Catalytic I2 with TBHP as an oxidant in DMSO is the system of choice for this dominoreaction involving C–H functionalization/oxidative cyclization. This metal-free, mechanistically
[EN] SUBSTITUTED BENZALDEHYDE COMPOUNDS AND METHODS FOR THEIR USE IN INCREASING TISSUE OXYGENATION<br/>[FR] COMPOSÉS BENZALDÉHYDE SUBSTITUÉS ET PROCÉDÉS D'UTILISATION DE CEUX-CI DANS L'AUGMENTATION DE L'OXYGÉNATION DES TISSUS
申请人:GLOBAL BLOOD THERAPEUTICS INC
公开号:WO2013102142A1
公开(公告)日:2013-07-04
Provided are substituted benzaldehydes and derivatives thereof that act as allosteric modulators of hemoglobin, methods and intermediates for their preparation, pharmaceutical compositions comprising the modulators, and methods for their use in treating disorders mediate by hemoglobin and disorders that would benefit from increased tissue oxygenation.
作者:Takafumi Ide、Kaibo Feng、Charlie F. Dixon、Dawei Teng、Joseph R. Clark、Wei Han、Chloe I. Wendell、Vanessa Koch、M. Christina White
DOI:10.1021/jacs.1c06335
日期:2021.9.22
preparative intermolecular allylic C–H amination of 32 cyclic and linear compounds, including ones housing basic amines and competing sites for allylic, ethereal, and benzylic amination. Mechanistic studies support that the high selectivity of [MnIII(ClPc)] may be attributed to its electrophilic, bulky nature and stepwise amination mechanism. Late-stage amination is demonstrated on five distinct classes
烯丙基胺化能够实现天然产物的后期功能化,其中烯丙基 C-H 键丰富,氮的引入可能会改变生物特征。尽管取得了进展,但由于反应性和选择性问题,分子间烯丙胺化仍然是一个具有挑战性的问题,这些问题通常需要过量的底物,提供产物混合物,并使重要类别的烯烃(例如,官能化环状)不可行的底物。在这里,我们报道了一种可持续的锰全氯酞菁催化剂,[Mn III (ClPc)],实现了 32 种环状和线性化合物的选择性、制备性分子间烯丙基 C-H 胺化,包括含有碱性胺和烯丙基、醚和苄基竞争位点的化合物胺化。机理研究表明[Mn III (ClPc)]的高选择性可能归因于其亲电性、体积大的性质和逐步胺化机制。后期胺化作用在五种不同类别的天然产物中得到证实,通常具有 >20:1 的位点选择性、区域选择性和非对映选择性。
METHOD FOR PREPARING A COUMARIN COMPOUND, CHROMENE COMPOUND, AND METHOD FOR PREPARING A CHROMENE COMPOUND
申请人:Wang Eng-Chi
公开号:US20120088923A1
公开(公告)日:2012-04-12
Disclosed herein is a method for preparing a coumarin compound of formula (F), in which R
1
, R
2
, and R
3
are independently H, C
1
˜C
7
alkoxy, C
1
˜C
7
alkyl, phenoxy, benzyloxy, or a halogen atom; R
4
is an alkyl group; and Ar is an optionally substituted aryl group,
the method including: treating a chromene compound having the following formula (E)
with an acid in the presence of water.
A chromene compound of formula (E) and a method for preparing the chromene compound of formula (E) are also disclosed.