Company Filing History:
1 out of 41 
1 out of 8 Years Active: 2017
Title: The Innovative Contributions of Dadong Shen
Introduction
Dadong Shen is a notable inventor based in Xinchang County, China. He has made significant contributions to the field of pharmaceuticals, particularly in the synthesis of important compounds. His work has led to advancements that are both cost-effective and efficient in the production of medicinal intermediates.
Latest Patents
Dadong Shen holds a patent for a method of preparing a sitagliptin intermediate. This innovative method involves dissolving a specific compound into an organic solvent and utilizing fatty acid catalysis along with chlorosilane to perform a reduction reaction of carbon-carbon double bonds. The result is an intermediate compound of sitagliptin, which boasts a high yield, chemical purity, and optical purity, with a de % greater than 99.6%. This preparation method is advantageous as it avoids the use of precious metals as catalysts, thereby reducing costs and simplifying post-treatment processes. It is suitable for industrial production and can be effectively used in the synthesis of sitagliptin.
Career Highlights
Throughout his career, Dadong Shen has worked with prominent organizations such as the Shanghai Institute of Pharmaceutical Industry and Zhejiang Medicine Co., Ltd. His experience in these institutions has allowed him to refine his skills and contribute to significant advancements in pharmaceutical research and development.
Collaborations
Dadong Shen has collaborated with several professionals in his field, including Kuaile Lin and Zhengyan Cai. These collaborations have fostered a productive environment for innovation and have led to the successful development of new methodologies in pharmaceutical synthesis.
Conclusion
Dadong Shen's contributions to the field of pharmaceuticals, particularly through his innovative patent for preparing a sitagliptin intermediate, highlight his role as a significant inventor. His work not only enhances the efficiency of drug production but also paves the way for future advancements in the industry.