The Hong Kong Polytechnic University

Hong Kong Baptist University

Other

Yunnan Minzu University

Yunnan University of Nationalities

Albert Sun-Chi Chan

Zhaoxiang Bian

Aiping Lu

Siu Wai Tsang

Hongjie Zhang

Chengyuan Lin

Dajian Yang

Hongxi Xu

Shilin Chen

Baomin Fan

Cheng-Chao Pai

Fu-Yao Zhang

Jing Wu

Rongwei Guo

Huaixue Mu

Jun Wang

Gang Chen

Yegao Chen

Sau Hing Chan

Yongyun Zhou

Kim-hung Lam

Jingchao Chen

Chor Hing Cheng

Filly Cheung

Chung-hin Chui

Qingjing Yang

Jianxin Ji

Jia-Yuan Hu

Wen-Zao Li

Jian-Ying Qi

Bin Sun

Wen-Hao Hu

Ming Yan

Xian-Jun Li

Ai-Qiao Mi

Yao-Zhong Jiang

Qing-Hua Fan

Chao Huang

Jianbin Xu

Jun Hu

Haitao Xiao

Hongyan Qin

Liqin Qiu

Li-Sheng Deng

Johnny Cheuk-On Tang

Roberto Gambari Ferrara

Stanton Hon-Lung Kok

This invention relates to the quick and efficient synthesis of anti-tumor or anti-cancer compounds. More particularly, it relates to the quick and efficient synthesis of anti-tumor or anti-cancer compounds comprising phenylacetophenone derivatives using oxabenzonorbornadienes with terminal alkynes.

Palladium/silver co-catalyzed tandem reactions synthesis of phenylacetophenone derivatives by oxabenzonorbornadienes with terminal alkynes and their anti-tumor or anti-cancer activities

The present invention relates to a method of using trans-3,5,4'-trihydroxybibenzyl, also known as dihydro-resveratrol for treating acute pancreatitis in a subject in needs thereof. More particularly, the present invention relates to a method of using dihydro-resveratrol, its derivatives and/or chemical variants as a remedial agent. The present invention particularly relates to the amelioration of tissue injury for the management of acute pancreatitis associated pulmonary injury of a subject.

Method of using dihydro-resveratrol for treating acute pancreatitis and associated pulmonary injury

A method for suppressing activation of pancreatic stellate cells of a subject includes administering a composition comprising a therapeutically effective amount of Eruberin A. A method of preventing, alleviating or treating pancreatic tumors or pancreatic tumors related diseases includes administering a composition comprising a therapeutically effective amount of Eruberin A. The Eruberin A may be extracted from

Use of a flavanol glycoside for suppressing activation of stellate cells

The present invention relates to a type of norcantharidin analogues and a method to synthesis such norcantharidin analogues by transition metal-catalyzed alkynylation of 7-oxabenzonorbornadienes. The present invention also relates to the use of such norcantharidin analogues in manufacture of a medicament for the treatment of cancer tumors.

Asymmetric synthesis of norcantharidin analougus by alkynylation of oxabenzonorbornadienes and their anticancer activities

The present invention relates to a method of using an anthraquinone derivative namely 9,10-Dihydro-4,5-dihydroxy-9,10-dioxo-2-anthracenecarboxylic acid, or known as Rhein, for treating chronic pancreatitis induced fibrosis of the pancreas. More particularly, the present invention relates to a method of using Rhein, its derivatives and/or chemical variants as an anti-fibrotic agent. The present invention particularly relates to the suppression of pancreatic stellate cell activation for the management of chronic inflammatory, fibrotic and tumorigenic pathologies in the pancreas.

Method of using rhein for treating fibrotic conditions and tumors

The present invention provides bipyrimidinyl diphosphine compounds of the formula wherein The compounds of the formula (I) are chiral atropisomeric bipyrimidinyl diphosphine compounds and, thus, may be employed as ligands to generate chiral transition metal catalysts which may be applied in a variety of asymmetric reactions, e.g., in palladium catalyzed asymmetric allylic substitution reactions. The compounds of the present invention are easily accessible in high enantiomeric purity according to the methods disclosed herein.

Chiral tertiary aminoalkylnaphthols

The invention relates to the compounds of formula: (I) which are as defined in the specification. Their use as chiral ligands in catalytic aryl transfer reactions to aromatic aldehydes is also described.

The present invention provides compounds of the formula wherein The compounds of formula (I) are bridged C-symmetric biphenyldiphosphine analogs and, thus, may be employed as ligands to generate chiral transition metal catalysts which may be applied in a variety of asymmetric reactions. The compounds of the present invention are easily accessible in high diastereomeric and optical purity according to the methods disclosed herein.

Biphenyldiphosphine compounds

A method for the preparation of aryl methyl ketones converts a variety of ethyl arenas to the corresponding aryl methyl ketones using a dioxygen-containing gas as the oxidant. The catalyst used for the reaction is a metal complex bearing general formulas as disclosed.

Catalytic preparation of aryl methyl ketones using a molecular oxygen-containing gas as the oxidant

Novel soluble polyester-supported chiral phosphines have been prepared and have been used in the preparation of rhodium and ruthenium catalysts. Such polymer-supported catalysts show high catalytic activities and enantioselectivities. In the case of Ru(BINAP) catalyst supported on soluble polyester, the resulting catalysts were found to be more active than those of the corresponding homogeneous Ru(BINAP) catalysts in the asymmetric hydrogenation of 2-arylpropenoic acids. These soluble polyester-supported catalysts can be easily separated from the reaction mixture and then be reused without loss of activity and selectivity.

Soluble polyester-supported chiral phosphines

This invention relates to (R)- and (S)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl-2,2'-diamine (R-1 and S-1) and (R)- and (S)-2,2'-bis(diarylphospinoamino)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binap hthyl (R-2 and S-2) and (R)- and (S)-2,2'-bis(diaklphospinoamino)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaph thyl (R-3 and S-3); to a process for the preparation of R-1 and S-1 in which (R) or (S)-1,1'-binaphthyl-2,2'-diamine is partially hydrogenated in the presence of Adam's catalyst (5-20 wt/o of starting material) at 20-100.degree. C. for 20-100 hours in glacial acetic acid (solvent); to a process for the preparation of R-2, S-2, R-3 and S-3 in which R-1 or S-1 is reacted with chlorodiarylphosphine or chlorodialkylphosphine in the presence of n-butyllithium; and to the rhodium complexes containing 2 or 3 as effective catalysts for the asymmetric hydrogenation of prochiral substrates such as olefins to produce higher valued chiral products; and to the asymmetric catalytic hydrogenation of enamides under mild conditions using the Rh-(2) or Rh-(3) as catalyst with chemical yields as high as 100% and enantiomeric excess (e.e.) as high as 99%.

Chiral aminophosphines

This invention relates to (R)- and (S)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl-2,2'-diamine (R-1 and S-1) and (R)- and (S)-2,2'-bis(diarylphospinoamino)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binap hthyl (R-2 and S-2) and (R)- and (S)-2,2'-bis(dialkylphospinoamino)-5,5',6,6',7,7',8,8'-octahydro-1,1'-bina phthyl (R-3 and S-3); to a process for the preparation of R-1 and S-1 in which (R) or (S)-1,1'-binaphthyl-2,2'-diamine is partially hydrogenated in the presence of Adam's catalyst (5-20 wt % of starting material) at 20-100.degree. C. for 20-100 hours in glacial acetic acid (solvent); to a process for the preparation of R-2, S-2, R-3 and S-3 in which R-1 or S-1 is reacted with chlorodiarylphosphine or chlorodialkylphosphine in the presence of n-butyllithium; and to the rhodium complexes containing 2 or 3 as effective catalysts for the asymmetric hydrogenation of prochiral substrates such as olefins to produce higher valued chiral products; and to the asymmetric catalytic hydrogenation of enamides under mild conditions using the Rh-(2) or Rh-(3) as catalyst with chemical yields as high as 100% and enantiomeric excess (e.e.) as high as 99%.

Novel, optically active phosphorous compounds of the formula, ##STR1## wherein R.sup.1 represents hydrogen atoms, straight or branched-chain alkyl groups having from 1 to 6 carbon atoms, R.sup.2 represents hydrogen atoms, halogen atoms, lower alkyl groups (1 to 6 carbon atoms), lower alkoxy groups (1 to 6 carbon atoms), hydroxy group, chiral hydroxyalkyl groups, and amino groups (1.degree., 2.degree., 3.degree.) vinyl groups or allyl groups and R.sup.3 represents phenyl groups, aryl groups, cyclohexyl groups, substituted and unsubstituted cycloalkyl groups, heteroaromatic rings, are described. The compounds of the formula serve as highly useful ligands in the preparation of ruthenium complexes which are effective catalysts for the asymmetric hydrogenation of 2-arylpropenoic acids leading to high valued 2-arylpropionic acids.

Chiral pyridylphosphines and their application in asymmetric catalytic

New optically active phosphinite compounds which are useful in asymmetric catalysis have been synthesized and have been used in the preparation of rhodium catalysts. Such catalysts are particularly useful in enantioselective catalytic hydrogenation reactions.

Chiral phosphinites

Growing community of inventors

Hong Kong, China

Albert Sun-Chi Chan