Abstract: A method for preparing a collagen from a chromium-containing tanned leather waste is disclosed. The method includes acid dechromation, obtaining a collagen aggregate, and converting the collagen aggregate to the collagen. The method also includes a reaction in a supercritical carbon dioxide reactor.
Type:
Application
Filed:
March 2, 2019
Publication date:
October 10, 2019
Applicant:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Abstract: A gossypol eflornithine Schiff base compound having the following Formula I: is disclosed. A method of preparing the compound of Formula I is also disclosed.
Type:
Grant
Filed:
March 20, 2019
Date of Patent:
July 2, 2019
Assignee:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventors:
Chengyuan Liang, Shunjun Ding, Nan Hui, Juan Li, Dezhu Zhang, Xiaolin Xie
Abstract: A compound having the following formula I: is disclosed. A method of preparing the compound of formula I is also disclosed.
Type:
Grant
Filed:
March 20, 2019
Date of Patent:
July 2, 2019
Assignee:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventors:
Chengyuan Liang, Lei Tian, Yuzhi Liu, Xingke Ju, Nan Hui, Mi Wu, Juan Li, Han Li, Bin Tian, Qianqian Zhao, Gennian Mao, Nan Qin, Juan Xia, Zhenfeng Shi
Abstract: A compound of chemical formula I or a pharmaceutical acceptable salt thereof is disclosed. R1 is OH or OAc; X is C or N; and R2 is H, alkyl, alkoxy, benzyloxy, haloalkyl, OH, CN, NO2, or halogen, provided that when X is N, R2 is nil.
Type:
Application
Filed:
October 23, 2018
Publication date:
June 20, 2019
Applicant:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventors:
Chengyuan LIANG, Lei TIAN, Nan QIN, Juan XIA, Shaomeng PEI
Abstract: A compound of chemical formula I: or chemical formula II: or a pharmaceutical acceptable salt thereof is disclosed. R1, R2, R3, and R4 are independently H, halogen, nitro, hydroxyl, cyano, benzyloxy, C1-C8 straight or branched alkyl, C1-C8 straight or branched haloalkyl, C1-C8 straight or branched alkoxy.
Type:
Application
Filed:
October 23, 2018
Publication date:
June 20, 2019
Applicant:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventors:
Chengyuan LIANG, Lei TIAN, Nan QIN, Juan XIA, Shaomeng PEI
Abstract: A compound having the following formula I: In formula I, R1 and R2 are independently H, alkyl, alkoxy, and halogen. A method of preparing the compound of formula I is also disclosed.
Type:
Grant
Filed:
July 23, 2018
Date of Patent:
March 19, 2019
Assignee:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventors:
Chengyuan Liang, Lei Tian, Yonghong Tang, Minghui Chang, Kaiqi Shi, Xingke Ju, Yuzhi Liu, Lili Wen, Han Li, Xuechuan Wang
Abstract: A method of preparing an aesculin sturgeon skin gelatin with antioxidant activity and Enterococcus faecalis detection ability includes: 1) mixing a sturgeon skin gelatin and distilled water in a ratio of 1:15-1:25 (w/v) at 50-70° C. and filtering to obtain a sturgeon skin gelatin solution; 2) adding aesculin and a glycerin solution to the sturgeon skin gelatin solution, stirring the resulted sturgeon skin gelatin solution at 30-50° C. for 30 minutes, and filtering; and 3) removing air bubbles from the sturgeon skin gelatin solution of step 2) under reduced pressure, placing the sturgeon skin gelatin solution on an acrylic glass, and drying the sturgeon skin gelatin solution at in a vented oven 25° C. and 45-55% relative humidity for 24 hours to obtain the aesculin sturgeon skin gelatin film.
Type:
Application
Filed:
July 3, 2018
Publication date:
January 31, 2019
Applicant:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventors:
Chengyuan LIANG, Lei TIAN, Minyi JIA, Ying HUANG, Xuechuan WANG, Taotao QIANG, Longfang REN, Xingke JU
Abstract: A lappaconitine aza-cinnamic acid derivative having the following formula (I): X is C or N, and R1, R2, and R3 are independently H or lower alkyl. A method of preparing the lappaconitine aza-cinnamic acid derivative of formula (I) is also disclosed.
Type:
Grant
Filed:
September 25, 2017
Date of Patent:
October 16, 2018
Assignee:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Abstract: An isatin spiro compound having the following formula (I): R1 is halogen or C1-3 alkyl; R2 is C1-3 alkyl or benzyl; and R3 and R3? are independently H, C1-3 alkyl or phenyl.
Type:
Grant
Filed:
April 19, 2018
Date of Patent:
September 11, 2018
Assignee:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Abstract: A hesperetin aza-cinnamic acid derivative has the following formula (I): R1 is H or alkyl, and R2 and R2 are independently H, alkyl, hydroxy, halogen, nitro, or alkoxy.
Type:
Application
Filed:
September 29, 2017
Publication date:
July 5, 2018
Applicant:
SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY