Hiroaki Tokiwa

Title: Hiroaki Tokiwa: Innovator in Photochromic Compounds and Vitamin D Receptor Modulators

Introduction

Hiroaki Tokiwa is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of chemistry, particularly in the development of innovative compounds. With a total of two patents to his name, Tokiwa's work focuses on photochromic compounds and vitamin D receptor modulators.

Latest Patents

Tokiwa's latest patents include a water-soluble photochromic compound. This compound is a diarylethene represented by a specific formula, wherein Sg is a monovalent sugar residue formed by removing one hydroxyl group from a sugar compound. The sugar is selected from various types, including six-membered ring sugars and oligosaccharides. His second patent involves vitamin D receptor modulators with partial agonist activity. This invention provides a compound that functions as a selective vitamin D receptor modulator, ensuring action-selectivity or tissue-selectivity without inducing hypercalcemia.

Career Highlights

Throughout his career, Hiroaki Tokiwa has worked with reputable organizations such as Rikkyo Educational Corporation and Josho Gakuen Educational Foundation. His experience in these institutions has contributed to his expertise in the field of chemistry and innovation.

Collaborations

Tokiwa has collaborated with notable individuals in his field, including Masahiro Irie and Kiyoshi Ikeda. These collaborations have likely enriched his research and development efforts.

Conclusion

Hiroaki Tokiwa's contributions to the fields of photochromic compounds and vitamin D receptor modulators highlight his innovative spirit and dedication to advancing scientific knowledge. His work continues to influence the landscape of chemistry and its applications.