Recent Advanced in Steroids : Thio-, Oxa-, and Pentacyclic Steriods

Through this book, we can see that the synthesis of steroids continuous to be a challenge for many teams of research. Indeed, due to the molecular biology, the bio-chemistry of steroids is going to be better understand. The steroids receptors are going to be better explored. the biological activities of those oxo steroids for which data are available have been given. we note that most of the efforts till now were concentrated on the synthesis of steroids containing a new ring fused to a ring A, ring D are bridging ring A and B