In vitro induction of spermatogenesis in male Japanese eel,Anguilla japonica, by methyl testosterone and androstenedione;

Induced ovarian development and maturation by implantation androstenedione enveloped silastic bar in female cultivated eel, Anguilla japonica;

Starting from 4-androstenedione, three novel 3-oxo-4-aza-5-androstene-17-oxime derivatives 7, 8 and 9 were synthesized through oxidation ring cleavage, amination ring closure, oximation,and substitution.

One of key factors,which hindered producing androst-4-ene-3,17-dione(AD)on industrial scale is that the yield of androst-4-ene-3,17-dione is low.

Four analytical methods including TLC,UV,HPLC and GC were compared on the detecting of the transformation of phytosterol to androst-4-ene-3,17-dione in fermentation samples.

androst-4-ene-3,17-dione(AD)is the intermediate of hormone medication,which is impossible replace by others.

Androstenedione(AD) and dehydroepiandrosterone(DHEA) as a new steroid material attracts people’s attention because o.

Androstenedione(AD), as a new steroid material, attracts chemists’attention because of the shortage of diosgenin resource and the successful synthesis by degradation of sterols.

The androst 4 ene 3,17 dione(4AD) transformation strain, the microorganism of Mycobacterium HCCB004, was treated by UV, frequency doubling YAG pulse laser and UV combined with YAG pulse laser in different doses and the restoration and effects were discussed.