Acyl Radical Smiles Rearrangement To Construct Hydroxybenzophenones by Photoredox Catalysis
作者:Junzhao Li、Zhengyi Liu、Shuang Wu、Yiyun Chen
DOI:10.1021/acs.orglett.9b00353
日期:2019.4.5
hydroxybenzophenones under mild and metal-free conditions is reported. Using the dual catalysis of hypervalentiodine(III) reagents and organophotocatalysts, ketoacids readily generate acyl radicals and undergo 1,5-ipso addition. This method can construct electron-deficient and electron-rich hydroxybenzophenones with excellent chemoselectivity and on gram scale. The performance of the reaction in neutral aqueous conditions
Novel .beta.-D-phenylthioxylosides, their method of preparation and
申请人:Fournier Innovation et Synergie
公开号:US04960758A1
公开(公告)日:1990-10-02
The present invention relates to .beta.-D-phenylthioxyloside compounds selected from the group consisting of: (i) the .beta.-D-phenylthioxylosides of the formula: ##STR1## in which: R.sub.1 and R.sub.2, which can be identical or different, which represent a hydrogen atom or a trifluoromethy or cyano group, A represents CHOH or CO and Y represents a hydrogen atom or an acyl group; and (ii) epimers thereof when A is CHOH. The said .beta.-D-phenylthioxyloside compounds are useful in therapy as antithrombotics.
Composition For Diagnosing Amyloid-Related Diseases
申请人:Mori Hiroshi
公开号:US20080131367A1
公开(公告)日:2008-06-05
A composition for diagnosing amyloid-related diseases, which comprises a flavone derivative, a chalcone derivative, a styrylchromone derivative, or a coumarin derivative, is provided. These compounds have high binding specificity to an amyloid β protein, high permeability to a blood-brain barrier, and ability to rapidly disappear from sites other than cerebral senile plaque. Accordingly, the composition of the present invention using these compounds enables the diagnosis of amyloid-related diseases with high precision.
Synthesis of Thioxanthone 10,10-Dioxides and Sulfone-Fluoresceins via Pd-Catalyzed Sulfonylative Homocoupling
作者:Gergely Knorr、Mariano L. Bossi、Alexey N. Butkevich、Stefan W. Hell
DOI:10.1021/acs.orglett.3c04300
日期:2024.2.2
Our report describes the facile and scalable preparation of 9H-thioxanthen-9-one 10,10-dioxides via Pd-catalyzed sulfonylative homocoupling of the appropriately substituted benzophenones. This transformation provides a straightforward route to previously unreported sulfone-fluoresceins and -fluorones. Several examples of these red fluorescent dyes have been prepared, characterized, and evaluated as
Novel beta-D-phenylthioxylosides, their method of preparation and their use as pharmaceuticals
申请人:FOURNIER INDUSTRIE ET SANTE
公开号:EP0367671A2
公开(公告)日:1990-05-09
The present invention relates to β-D-phenylthioxytoside compounds selected from the group consisting of:
(i) the β-D-phenylthioxylosides of the formula:
in which: R, and R2, which can be identical or different, each represent a hydrogen atom or a trifluoromethyl or cyano group, A represents CHOH or CO and Y represents a hydrogen atom or an acyl group; and
(ii) epimers thereof when A is CHOH.
The said β-D-phenylthioxyloside compounds are useful in therapy as antithrombotics.
本发明涉及选自以下组别的β-D-苯硫基糖苷化合物:
(i) 式中β-D-苯基硫代氧糖苷:
其中R和R2可以相同或不同,各自代表氢原子或三氟甲基或氰基,A代表CHOH或CO,Y代表氢原子或酰基;以及
(ii) 当 A 为 CHOH 时,其表聚物。
上述 β-D-苯基硫酮糖苷化合物可作为抗血栓药物用于治疗。