Related Experiment Videos
Synthesis of 11 alpha-hydroxyprogesterone haptens
H Yoshida1, S Nakai, F Nimbari
1Department of Organo-chemical Research, Rohto Pharmaceutical Co., Ltd., Osaka, Japan.
Steroids
|June 1, 1989
Summary
Researchers synthesized novel bridged haptens of 11 alpha-hydroxyprogesterone, an anti-androgen, using epoxide ring openings. Unexpectedly, a C-4 substituted product was formed from a 6-bromo progesterone derivative, differing from prior findings.
Area of Science:
- Organic Chemistry
- Medicinal Chemistry
- Steroid Chemistry
Background:
- 11 alpha-hydroxyprogesterone is an anti-androgen with potential therapeutic applications.
- Synthesis of progesterone derivatives is crucial for developing new pharmaceuticals.
- Bridged haptens can offer unique pharmacological properties.
Purpose of the Study:
- To synthesize C-4 and C-6 bridged haptens of 11 alpha-hydroxyprogesterone.
- To investigate the regioselectivity of epoxide ring opening reactions on progesterone derivatives.
- To explore novel synthetic routes for anti-androgen compounds.
Main Methods:
- Synthesis of C-4 and C-6 bridged haptens via epoxide ring opening of 11 alpha-hydroxyprogesterone.
- Utilized 3-mercaptopropanoic acid as a key reagent.
- Investigated the reaction of 3-mercaptopropanoic acid with a 6-bromo derivative of progesterone.
Main Results:
- Successfully synthesized C-4 and C-6 bridged haptens of 11 alpha-hydroxyprogesterone.
- The reaction of 3-mercaptopropanoic acid with 4,5 and 5 alpha, 6 alpha epoxides yielded the desired bridged products.
- Unexpectedly obtained a C-4 substituted product from the 6-bromo progesterone derivative, contrary to literature.
Conclusions:
- Established novel synthetic pathways for bridged haptens of 11 alpha-hydroxyprogesterone.
- Highlighted the potential for unexpected regioselectivity in steroid modifications.
- The findings provide new insights into the synthesis of anti-androgen agents.