Norio Ohnuma

Title: Norio Ohnuma: Innovator in Pharmaceutical Compositions

Introduction

Norio Ohnuma is a notable inventor based in Hino, Japan. He has made significant contributions to the field of pharmaceutical compositions, particularly in the area of vitamin D derivatives. His work has implications for the treatment of vitamin D deficiency and related diseases.

Latest Patents

Ohnuma holds a patent for 1.alpha.-Hydroxy-24-dehydrovitamin D.sub.3 pharmaceutical compositions. This patent includes novel compounds such as 1.alpha.-hydroxy-24-dehydrovitamin D.sub.3 and its hydroxyl-protected derivatives, as well as 1.alpha.-hydroxy-24-dehydroprevitamin D.sub.3 and its derivatives. These compounds serve as key intermediates for preparing the aforementioned substances. The pharmacological action of 1.alpha.-Hydroxy-24-dehydrovitamin D.sub.3 is crucial for controlling calcium metabolism in warm-blooded animals, making it useful as a prophylactic or therapeutic pharmaceutical for vitamin D deficiency diseases.

Career Highlights

Norio Ohnuma is associated with Teijin Limited, where he has been able to apply his innovative ideas in a corporate setting. His work has led to advancements in pharmaceutical formulations that address critical health issues.

Collaborations

Ohnuma has collaborated with notable colleagues such as Seiichi Ishizuka and Tatuyuki Naruchi. Their combined expertise has contributed to the development of effective pharmaceutical solutions.

Conclusion

Norio Ohnuma's contributions to pharmaceutical compositions highlight the importance of innovation in addressing health challenges. His work continues to impact the field positively, particularly in the treatment of vitamin D deficiency.