Benzo[c]quinolizin-3-ones: A Novel Class of Potent and Selective Nonsteroidal Inhibitors of Human Steroid 5α-Reductase 1

FCE 28260 (PNU 156765), an under-explored 5α-reductase inhibitor, showcases promising results in research by Giudici et al., outperforming well-known treatments like Finasteride in reducing the conversion of testosterone to DHT. Its superior efficacy, demonstrated through lower IC50 values in both natural and human recombinant enzyme studies, suggests it could offer more effective management of DHT-related conditions. Additionally, its lower molecular weight hints at better potential for topical application, potentially offering advantages in treating conditions such as androgenic alopecia. Despite its potential, it has not advanced in development, possibly due to financial limitations, leaving its therapeutic prospects and side effect profile largely unexplored.

Finasteride and dutasteride are discussed for hair loss, with concerns about their effects on neurosteroids and potential side effects like depression. Alternatives like topical estrogen and lifestyle changes are considered, with varying opinions on mental health and hair regrowth.

The conversation discusses the molecular structures of compounds that reduce DHT levels, including finasteride and Ashwagandha. It explores the potential of using Ashwagandha topically as a 5a reductase inhibitor.

The conversation discusses the need for a localized 5-alpha reductase inhibitor that only affects the scalp without systemic side effects, similar to pyrilutamide's approach. Current treatments like topical liposomal finasteride and dutasteride are mentioned, but concerns about their systemic effects and lack of research are highlighted.

The conversation is about exploring topical anti-androgens for hair loss, specifically mentioning Bicalutamide and the unpleasant smell of Spironolactone. RU58841 is unavailable, and Breezula is suggested as an alternative.

RU58841 shows the strongest results despite weaker binding affinity, while KX-826 and CB-03-01 are more expensive and have minimal side effects. RU58841 is considered effective but has potential health risks if ingested; users report positive outcomes with RU58841 and finasteride.