Synthesis of 4-Methyl-4-aza-21 E-benzylidene-5-pregnene-3,20-dione
CHEN Shaorui, SHEN Fengjuan
Chinese Journal of Applied Chemistry . 2017, (6): 671 -675 .  DOI: 10.11944/j.issn.1000-0518.2017.06.160354