A simple two-step method for the conversion of [3H]cortisol to [3H]-11-ketotestosterone
摘要:
Despite the existence of several protocols, problems appear to persist in the small scale chemical synthesis of radiolabeled 11-ketotestosterone from cortisol. We investigated the possibilities of using the mild oxidant pyridinium dichromate for the oxidative cleavage of the dihydroxyacetone side chain of cortisol and 17 beta-hydroxysteroid dehydrogenase for the subsequent reduction of the resulting 17-keto group. Our protocol has resulted in consistently high yields of both the intermediate, adrenosterone (70-80%), and the product, 11-ketotestosterone (up to 60%). This, taken together with the convenience and relatively low cost of our method, recommends the protocol for its use for the synthesis of [H-3]-11-ketotestosterone for endocrine studies. (C) 1997 by Elsevier Science Inc.
[EN] INHIBITORS OF 11-BETA-HYDROXY STEROID DEHYDROGENASE TYPE 1 AND TYPE 2<br/>[FR] INHIBITEURS DE 11-BETA-HYDROXY STEROIDE DEHYDROGENASE DE TYPE 1 ET DE TYPE 2
申请人:STERIX LTD
公开号:WO2004037251A1
公开(公告)日:2004-05-06
There is provided a compound having Formula (I): wherein one of R1 and R2 is a group of the Formula (a), wherein R4 is selected from H and hydrocarbyl, R5 is a hydrocarbyl group and L is an optional linker group, or R1 and R2 together form a ring substituted with the group (Formula (a)) wherein R3 is H or a substituent, and wherein X is selected from S, O, NR6 and C(R7)(R8), wherein R6 is selected from H and hydrocarbyl groups, wherein each of R7 and R8 are independently selected from H and hydrocarbyl groups.
[EN] GLYCYRRHETINIC ACID AMINE ANALOGUES FOR USE IN THE TREATMENT OF INFLAMMATION, INFECTIOUS DISEASES, CANCER, AUTOIMMUNE DISEASES, SKIN DISEASES, BONE DISEASES AND METABOLIC DISEASES<br/>[FR] ANALOGUES AMINE D'ACIDE GLYCYRRHÉTINIQUE DESTINÉS À ÊTRE UTILISÉS DANS LE TRAITEMENT DE L'INFLAMMATION, DES MALADIES INFECTIEUSES, DU CANCER, DES MALADIES AUTO-IMMUNES, DES MALADIES DE LA PEAU, DES MALADIES DES OS ET DES MALADIES MÉTABOLIQUES