Company Filing History:
3 out of 58 
1 out of 41 Years Active: 2016-2019
Title: Qingfeng Cai: Innovator in Chemical Pharmaceuticals
Introduction
Qingfeng Cai is a notable inventor based in Zhejiang, China, recognized for his contributions to the field of chemical pharmaceuticals. With a total of three patents to his name, he has made significant advancements in the synthesis of pharmaceutical intermediates.
Latest Patents
One of his latest patents is titled "Disaccharide intermediate and synthesis method thereof." This invention pertains to a disaccharide intermediate and a method for its synthesis, specifically aimed at preparing a disaccharide segment that serves as a key intermediate for the chemical synthesis of heparin and heparinoid compounds. The patent outlines three methods for synthesizing the disaccharide intermediate, utilizing compounds of a specific formula and glucopyranose protected by different anomeric carbons. The technical solutions presented in this patent emphasize the ease of obtaining synthetic raw materials, mild reaction conditions, and suitability for industrial production.
Another significant patent by Qingfeng Cai is "4-substituent-2-hydroxylmorpholine-3-one and preparation method thereof." This invention focuses on a molecule with neural activities, particularly 4-substituent-2-hydroxymorpholin-3-one, which serves as a new intermediate for the neurokinin-1 receptor antagonist aprepitant. The patent details the preparation method for this important compound.
Career Highlights
Qingfeng Cai has worked with prominent companies in the pharmaceutical industry, including Zhejiang Hisun Pharmaceutical Co., Ltd. His experience in these organizations has contributed to his expertise in the development of innovative pharmaceutical solutions.
Collaborations
Throughout his career, Qingfeng Cai has collaborated with notable colleagues such as Fuli Zhang and Pengcheng Qiu. These collaborations have likely enhanced his research and development efforts in the pharmaceutical field.
Conclusion
Qingfeng Cai stands out as an influential inventor in the realm of chemical pharmaceuticals, with a focus on innovative synthesis methods for important pharmaceutical intermediates. His work continues to impact the industry positively.
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