Location History:
- Kalamazoo, MI (US) (1976)
- Kalamazoo County, MI (US) (1984)
- Portage, MI (US) (1976 - 2004)
Company Filing History:
Years Active: 1976-2004
Title: Verlan H Van Rheenen: Innovator in Steroid Chemistry
Introduction
Verlan H Van Rheenen is a notable inventor based in Portage, MI (US), recognized for his significant contributions to the field of steroid chemistry. With a total of 11 patents to his name, he has developed innovative processes that have advanced the production of biologically active substances.
Latest Patents
Among his latest patents is a process for making estra-4,9(10)-diene steroids. This novel method allows for the synthesis of estra-4,9(10)-diene-3,17-dione steroids from readily available 19-nor-androst-4-ene-3-one steroids through a straightforward three-step process. The products generated from this process serve as important intermediates in the preparation of biologically active substances. Another significant patent is the cyanohydrin process, which utilizes cyanohydrin intermediates to transform 17-keto steroids into corticoids and 17.alpha.-acyl progesterones.
Career Highlights
Throughout his career, Van Rheenen has worked with prominent companies such as The Upjohn Company and Bridge Organics Company. His work in these organizations has contributed to the advancement of steroid chemistry and the development of new pharmaceutical products.
Collaborations
He has collaborated with notable coworkers, including Kenneth P Shephard and Dae Y Cha, further enhancing the impact of his work in the field.
Conclusion
Verlan H Van Rheenen's innovative approaches in steroid chemistry have led to significant advancements in the production of biologically active substances. His contributions continue to influence the pharmaceutical industry and the field of chemistry.