Location History:
- La Jolla, CA (US) (1998 - 1999)
- Lubbock, TX (US) (2003 - 2021)
Company Filing History:
4 out of 1,187 
2 out of 259 
Years Active: 1998-2025
Title: **Innovative Contributions of Inventor Guigen Li**
Introduction
Guigen Li is a prominent inventor based in La Jolla, California, recognized for his significant contributions to the field of peptide synthesis and asymmetric synthesis. With a total of five patents to his name, Li has developed innovative methodologies that advance the understanding and application of chemical synthesis processes.
Latest Patents
Among his latest inventions, Li's patents focus on two groundbreaking systems and methods. The first patent details a "System and method for solution phase gap peptide synthesis," which introduces a new benzyl-type GAP protecting group. This method allows for Fmoc peptide synthesis without the need for chromatography, recrystallization, or polymer supports, offering high yield for the addition and removal of the GAP group. The second patent describes a "Two step synthesis of D- and L-α-amino acids and D- and L-α-amino aldehydes." This innovative approach utilizes a catalyzed asymmetric aminohydroxylation reaction, employing osmium and chiral ligands to achieve regio- and enantioselective additions to olefin substrates, further enhancing the efficiency of amino acid synthesis.
Career Highlights
Throughout his career, Guigen Li has made impactful contributions while affiliated with prestigious institutions such as The Scripps Research Institute and Texas Tech University System. His work has significantly influenced the fields of organic and peptide chemistry.
Collaborations
Li has collaborated with notable scientists including K Barry Sharpless and Han-Ting Chang. Their partnerships have led to advancements in synthetic methodologies, enriching the scientific community's understanding of asymmetric synthesis and providing robust solutions for peptide synthesis challenges.
Conclusion
Guigen Li's innovative spirit and dedication to his craft are evidenced by his impressive patent portfolio and collaborations. As a leading figure in his field, his work continues to inspire future developments in chemical synthesis and related disciplines.