Zhejiang Hisun Pharmaceutical Co., Ltd.

Zhejiang Hisum Pharmaceutical Co., Ltd.

Hegeng Wei

Hua Bai

Yanghui Guo

Yue Zhang

Yingqiu Wu

Junhui Zhou

Xiaohe Zheng

Xiaoyu Liu

Qingfeng Cai

Yili Ding

Lifeng Cai

Fei Long

Lingwei Bai

Shibao Yang

Jian Hong

The present invention relates to a disaccharide intermediate and a synthesis method thereof, relates to the chemical pharmaceutical field, and more specifically relates to a method for preparing a disaccharide segment of a key intermediate for chemically synthesizing heparin and heparinoid compounds. Disclosed are a new disaccharide intermediate and three methods for synthesizing the disaccharide intermediate, that is, compounds of a formula (4) and glucopyranose protected by different anomeric carbon are made to react in the presence of an active agent, to obtain the disaccharide intermediate. According to the technical solutions of the present invention, synthetic raw materials are easy to obtain, have a mild reaction condition, and are suitable for industrialized production.

Disaccharide intermediate and synthesis method thereof

The present invention relates to a process of a chemically synthetic drug, and in particular, to a new intermediate of a heparin pentasaccharide and a preparation method thereof. The process has high reaction efficiency, and an easy reaction operation. The reaction intermediate is easy to be purified, and is appropriate for an industrialization production.

Preparation of new intermediate of heparin pentasaccharide and preparation method thereof

The present invention discloses a 4-((substituted phenyl)difluoromethyl)phenoxycarboxylic acid derivative and preparation process and use thereof. More specifically, the present invention relates to a compound of the following formula I, which is defined in the specification. The compounds according to the present invention can be used as PPAR agonists, and demonstrates a strong effect on reducing the levels of total cholesterol (TC), triglyceride (TG), and low density lipoprotein cholesterol (LDL-C) in blood plasma, and thus the compound according to the present invention can be used in the preparation of a medicament for treating or preventing hyperlipoidemia or cardio-cerebrovascular diseases caused by hyperlipoidemia, such as diabetes, atherosclerosis, stroke, coronary heart disease, etc. The present invention also relates to a novel intermediate compound for the preparation of the compound of formula I and preparation method thereof.

4-((substituted phenyl) difluoromethyl) phenoxy carboxylic acid derivative, and preparation method and uses thereof

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Zhejiang, China

Hegeng Wei