US 12,421,270 B2
Oligosaccharide, preparation method therefor, composition thereof and use thereof
Zhongjun Li, Beijing (CN); Xiaoming Wu, Shandong (CN); Xiao Zhang, Beijing (CN); Huiying Liu, Beijing (CN); Wang Yao, Beijing (CN); Qingbao Yang, Shandong (CN); Jianqiang Wang, Shandong (CN); and Tian He, Shandong (CN)
Assigned to YANTAI DONGCHENG BIOCHEMICALS CO., LTD, Shandong (CN)
Appl. No. 17/775,893
Filed by YANTAI DONGCHENG BIOCHEMICALS CO., LTD, Shandong (CN)
PCT Filed Jul. 15, 2019, PCT No. PCT/CN2019/096033
§ 371(c)(1), (2) Date May 11, 2022,
PCT Pub. No. WO2020/015612, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 201810778733.6 (CN), filed on Jul. 16, 2018.
Prior Publication US 2023/0029252 A1, Jan. 26, 2023
Int. Cl. C07H 11/00 (2006.01); C07H 5/06 (2006.01)
CPC C07H 11/00 (2013.01) [C07H 5/06 (2013.01)] 15 Claims
 
1. A fucosylated chondroitin sulfate oligosaccharide shown as Formula J, wherein:

OG Complex Work Unit Chemistry
in Formula J, Ac is acetyl; q is a positive integer and q≤10; Y is H, alkali metal, alkaline earth metal, or N(R6)4, wherein R6 is C1-C4 alkyl; R is azido, C1-C4 alkoxy, phenoxy, C1-C4 alkylthio, C1-C4 alkanoylthio, benzoyloxy or benzoylthio.