METHODS AND COMPOUNDS FOR PREPARING 3ALPHA-OXYGEN SUBSTITUTED STEROIDS
申请人:Ge Yu
公开号:US20120214987A1
公开(公告)日:2012-08-23
The invention relates to processes for preparing 3α-O-linked steroids including 3α-O-linked-androst-5-ene steroids and 3α-O-linked-5a-androstane steroids. In one process a 3α,4α-epoxy androst-5-en-17-one is predominately reduced at the epoxy moiety wherein reduction of the 3α,4α epoxy functional group occurs preferentially at position C4 with retention of configuration at position C3 to provide a 3α-O-linked-androst-5-ene steroid. In another process, conditions are provided for inversion of configuration of a 3β-hydroxy-androst-5-ene steroid by the Mitsunobu reaction to provide a 3α-O-linked-androst-5-ene steroid with reduced amounts of 3α,5α-cycloandrostane side-product impurities.
The invention provides compositions comprising formula 1 steroids, e.g., 16&agr;-bromo-3 &bgr;-hydroxy-5&agr;-androstan-17-one hemihydrate and one or more excipients, including compositions that comprise a liquid formulation comprising less than about 3% v/v water. The compositions are useful to make improved pharmaceutical formulations. The invention also provides methods of intermittent dosing of steroid compounds such as analogs of 16&agr;-bromo-3&bgr;-hydroxy-5&agr;-androstan-17-one and compositions useful in such dosing regimens. The invention further provides compositions and methods to inhibit pathogen replication, ameliorate symptoms associated with immune dysregulation and to modulate immune responses in a subject using the compounds. The invention also provides methods to make and use these immunomodulatory compositions and formulations.
Bell,A.M. et al., Journal of the Chemical Society. Perkin transactions I, 1973, p. 2131 - 2136
作者:Bell,A.M. et al.
DOI:——
日期:——
Use of DHEA derivatives for enhancing physical performance
申请人:Marchewitz Eric
公开号:US20060241093A1
公开(公告)日:2006-10-26
A method is disclosed for administering a DHEA derivative or a physiologically acceptable salt, ester or ether thereof for one of decreasing body weight, reducing adipose tissue, increasing endurance, as an anti-aging compound and generating production of red blood cells.
USE OF DHEA DERIVATIVES FOR ENHANCING PHYSICAL PERFORMANCE
申请人:Marchewitz Eric
公开号:US20110245216A1
公开(公告)日:2011-10-06
A method is disclosed for administering a DHEA derivative or a physiologically acceptable salt, ester or ether thereof for one of decreasing body weight, reducing adipose tissue, increasing endurance, as an anti-aging compound and generating production of red blood cells.