![The Synthesis of (−)-4-Methyl-8-Chloro-Trans-1,2,3,4,4a,5,6,10b-Octahydrobenzo-[f]-Quinolin-3-One-[3-14C] (LY300502-14C) via a Circuitous Route](/images/research/73bab8dc-bdf0-45e3-8ef7-73d0d4b93cb1/small/21074.jpg)
research The synthesis of (−)-4-methyl-8-chloro-trans-1,2,3,4,4a,5,6,10b-octahydrobenzo-[f]-quinolin-3-one-[3-14C] (LY300502-14C]) via a circuitous route
Scientists made a carbon-14 labeled version of a drug with a 48% yield and over 99% purity.
Search
for
Sort by
Research
30 / 1000+ results research Enzymology of the hair follicle.
Hair follicles convert androgens, affecting hair loss patterns.
research Synthesis and biological evaluation of esters of 16-formyl-17-methoxy-dehydroepiandrosterone derivatives as inhibitors of 5α-reductase type 2
Certain derivatives are more effective 5α-reductase type 2 inhibitors than finasteride.
research Human type 3 5α-reductase is expressed in peripheral tissues at higher levels than types 1 and 2 and its activity is potently inhibited by finasteride and dutasteride
Type 3 5α-reductase is more common and finasteride and dutasteride strongly inhibit it.
research Rat steroid 5α-reductase kinetic characteristics: Extreme pH-dependency of the type II isozyme in prostate and epididymis homogenates
The activity of a specific rat enzyme in the prostate and epididymis is highly dependent on the acidity level.
research Novel type 1 5a-reductase Inhibitors with Antiproliferative Potential on LNCaP cells
New compounds may help treat prostate cancer by reducing cell growth.
research Nonsteroidal inhibitors of human type I steroid 5-.alpha.-reductase
New compounds called benzoquinolinones may treat conditions linked to excess DHT.
![Benzo[c]quinolizin-3-ones: A Novel Class of Potent and Selective Nonsteroidal Inhibitors of Human Steroid 5α-Reductase 1](/images/research/ff6e6cbe-cb9c-4d11-87ef-671d28ffd4fa/small/15506.jpg)
research Benzo[c]quinolizin-3-ones: A Novel Class of Potent and Selective Nonsteroidal Inhibitors of Human Steroid 5α-Reductase 1
Benzo[c]quinolizin-3-ones are effective nonsteroidal inhibitors of human steroid 5α-reductase 1.
research Clinical dose ranging studies with finasteride, a type 2 5α-reductase inhibitor, in men with male pattern hair loss
Finasteride effectively treats male pattern hair loss with a 1 mg daily dose.
research Genetic analysis of 5 α reductase type 2 enzyme in relation to oxidative stress in cases of androgenetic alopecia in a sample of egyptian population
5α reductase type 2 enzyme mutation and oxidative stress may increase androgenetic alopecia risk in Egyptians.
![Synthesis and In Vitro Study of 17β-[N-Ureylene-N,N′-Disubstituted]-4-Methyl-4-Aza-5α-Androstan-3-Ones as Selective Inhibitors of Type I 5α-Reductase](/images/research/d19df8a7-8de6-4430-8a0d-4ffa1f502985/small/15608.jpg)
research Synthesis and in vitro study of 17β-[N-ureylene-N,N′-disubstituted]-4-methyl-4-aza-5α-androstan-3-ones as selective inhibitors of type I 5α-reductase
New compounds were made that effectively block a specific enzyme related to androgen conditions.
research Pharmacokinetic parameters and mechanisms of inhibition of rat type 1 and 2 steroid 5α-reductases: determinants for different in vivo activities of GI198745 and finasteride in the rat 3 3Abbreviations: r5AR1, rat 5α-reductase 1; r5AR2, rat 5α-reductase 2; and DHT, dihydrotestosterone.
GI198745 is more potent and longer-lasting than finasteride, potentially better for treating hair loss.
research Selective non-steroidal inhibitors of 5α-reductase type 1
Selective non-steroidal inhibitors of 5α-reductase type 1 can help treat DHT-related disorders.
research Longitudinal clinical course in patients with 5α-reductase type 2 deficiency treated with testosterone and dihydrotestosterone during infancy and puberty
Testosterone and dihydrotestosterone treatments can help with penile growth in males with 5α-reductase type 2 deficiency, with dihydrotestosterone being more effective in infancy.
research 102 Methylation of CpG islands in promoter of type 2 5-α reductase and implications of finasteride resistance for BPH therapy
Methylation in specific gene region causes finasteride resistance in some BPH patients.
research In Vivo Time-Dependent Inhibition of Human Steroid 5a-Reductase by Finasteride
Finasteride poorly inhibits type 1 5AR, affecting its effectiveness.
research Novel prospectives of shikimic acid and Prunus mume extract for enhancing bioactivity on 5α-reductase and stability in cosmetic patches for acne treatment
Combining shikimic acid and Prunus mume extract may effectively treat acne naturally.
research Synthesis and in Vitro Evaluation of 4-Substituted N-(1,1-Dimethylethyl)-3-oxo-4-androstene-17.beta.-carboxamides as 5.alpha.-Reductase Inhibitors and Antiandrogens
The new compounds moderately block a specific enzyme and strongly counteract a male hormone, suggesting potential for treating certain male-related health conditions.
research Natural Product-Inspired Bis(trifluoromethyl) Phenyl Hydroxycinnamate Derivatives as Promising Nonsteroidal Inhibitors of Human Steroid 5α-Reductase Type-1: Synthesis, In Vitro, and In Silico Studies
New compounds show promise as nonsteroidal treatments for hair loss.
![Synthesis and Activity of 8-Substituted Benzo[c]quinolizin-3-ones as Dual Inhibitors of Human 5α-Reductases 1 and 2](/images/research/efc54340-66d6-4f27-9930-045ac023f903/small/15248.jpg)
research Synthesis and activity of 8-substituted benzo[c]quinolizin-3-ones as dual inhibitors of human 5α-reductases 1 and 2
New compounds were made that effectively block enzymes related to prostate issues and hair loss.
![Effect of C-Ring Modifications in Benzo[c]quinolizin-3-ones, New Selective Inhibitors of Human 5α-Reductase 1](/images/research/c687900f-ea40-4de1-8f0b-a5b818951b1c/small/15452.jpg)
research Effect of C-ring modifications in benzo[c]quinolizin-3-ones, new selective inhibitors of human 5α-reductase 1
Changing the C-ring structure in certain compounds can make them better at blocking a specific human enzyme.
research Physiopathological role of the enzymatic complex 5α-reductase and 3α/β-hydroxysteroid oxidoreductase in the generation of progesterone and testosterone neuroactive metabolites
The enzymes 5α-reductase and 3α/β-hydroxysteroid oxidoreductase help create brain-active substances from progesterone and testosterone, which could be used for treatment, but more research is needed to ensure their safety and effectiveness.
research In vitro and In vivo Effects of 17β-N-(4-phenylcarbamoyl) androst-4-en-3- one Derivatives as 5a-reductase Inhibitors on Androgen-dependent Glands
Three compounds were found to inhibit a prostate disease-related enzyme and reduce prostate size more effectively than the current treatment, suggesting they could be used for treating benign prostatic hyperplasia.
research 5α-reductase activity in the prostate
Blocking the enzyme 5α-reductase can shrink the prostate and help treat enlarged prostate issues.
![Synthesis and 5α-Reductase Inhibitory Activity of 8-Substituted Benzo[ƒ]Quinolinones Derived from Palladium Mediated Coupling Reactions](/images/research/2aedba8c-b0ac-4fa3-9ac7-9f375a016bba/small/15581.jpg)
research Synthesis and 5α-reductase inhibitory activity of 8-substituted benzo[ƒ]quinolinones derived from palladium mediated coupling reactions
Some newly made compounds can block an enzyme linked to hair loss and prostate growth, with one in particular being very selective.
research 5α‐Reductase inhibitors and prostatic disease
5α-Reductase inhibitors can help treat hair loss, acne, and prostate issues by reducing DHT levels.
research Bacillus/Trapa japonica Fruit Extract Ferment Filtrate enhances human hair follicle dermal papilla cell proliferation via the Akt/ERK/GSK-3β signaling pathway
The extract from Bacillus/Trapa japonica fruit helps increase hair growth and could be a potential treatment for hair loss.
research Overexpression of aldo-keto reductase 1C3 (AKR1C3) in LNCaP cells diverts androgen metabolism towards testosterone resulting in resistance to the 5α-reductase inhibitor finasteride
Too much AKR1C3 enzyme causes resistance to finasteride by increasing testosterone.
research Evaluating the safety profile of α-1 blockers, 5α-reductase inhibitors, and PDE5I for BPH: a disproportionality analysis of real-world adverse events based on FDA adverse event reporting system (FAERS)
PDE5 inhibitors cause earlier adverse events in BPH treatment, requiring careful monitoring.
research 5α-Reductase inhibitors, antiviral and anti-tumor activities of some steroidal cyanopyridinone derivatives
Some newly made compounds are promising for treating enlarged prostate, hair loss, viruses, and prostate cancer, and might be better than current drugs.