Characterization of metabolites of Δ8,9-dehydroestrone in dogs
作者:A. Chandrasekaran、M. Osman、P. Raveendranath、K. Chan、J. A. Scatina、S. F. Sisenwine
DOI:10.1002/jms.1190301017
日期:1995.10
Δ8,9-Dehydroestrone is the fifth most abundant component in the conjugated equine estrogen preparation Premarin®, representing about 2 to 6% of the total steroids in the tablet. The metabolism of this estrogen has been determined in female beagle dogs after acute peroral administration. 17β-Dihydro-Δ8,9-dehydroestrone(17β-Δ8,9-dehydroestradiol) and 17α-dihydro-Δ8,9dehydroestrone(17α-Δ8,9-dehydroestradiol) have been identified as the major metabolites in plasma and urine. These metabolites, along with the unchanged drug, were isolated and purified by ether extraction and thin-layer chromatography of the urine samples after enzyme hydrolysis. The trimethylsilyl ether derivatives of the isolated metabolites were characterized by comparison of their mass spectra and chromatographic properties with those of synthetic reference standards.
Verwendung von einem Dehydroepiandrosteron und einem Estradiol Derivat zur Herstellung einer pharmazeutischen Zubereitung zur Behandlung klimakterischer Beschwerden in der Postmenopause
申请人:Jenapharm GmbH & Co. KG
公开号:EP1350541A1
公开(公告)日:2003-10-08
Die Anmeldung bezieht sich auf Arzneimittel zur Behandlung der klimakterischen Beschwerden in der Postmenopause, das umfaßt
a) Steroid der Formel (1)
in der
R für Wasserstoff oder ein C1-C4-Alkyl und
R1 und R2 für Wasserstoff stehen oder R1 und R2 identisch sind und CH2 bedeuten, sowie
b) Dehydroepiandrosteron und/oder einen Dehydroepiandrosteron-Ester und/oder ein anderes Dehydroepiandrosteron-Derivat.
本申请涉及治疗绝经后更年期症状的药物产品,包括
a) 式(1)的类固醇
中的
R 是氢或 C1-C4 烷基,且
R1 和 R2 为氢或 R1 和 R2 相同且为 CH2,及
b) 去氢表雄酮和/或去氢表雄酮酯和/或另一种去氢表雄酮衍生物。
8(9)-DEHYDROESTRADIOL DERIVATIVES
申请人:AMERICAN HOME PRODUCTS CORPORATION
公开号:EP0934334A1
公开(公告)日:1999-08-11
[EN] 8(9)-DEHYDROESTRADIOL DERIVATIVES<br/>[FR] DERIVES DE 8(9)-DESHYDROESTRADIOL
申请人:AMERICAN HOME PRODUCTS CORPORATION
公开号:WO1998016544A1
公开(公告)日:1998-04-23
(EN) This invention provides 17$g(a),$g(D)8,9-dehydroestradiol or a pharmaceutically acceptable salt of its 3-sulfate ester, and 17$g(b),$g(D)8,9-dehydroestradiol or a pharmaceutically acceptable salt of its 3-sulfate ester.(FR) L'invention a pour objet 17$g(a),$g(D)8,9-déshydroestradiol ou un sel pharmaceutiquement acceptable de son 3-sulfate-ester, et 17$g(b),$g(D)8,9-déshydroestradiol ou un sel pharmaceutiquement acceptable de son 3-sulfate-ester.
[EN] COMPOSITIONS RELATED TO BIOACTIVE AGENTS THAT CONVERT FROM ANIONS TO MOLECULES<br/>[FR] COMPOSITIONS ASSOCIÉES À DES AGENTS BIOACTIFS QUI CONVERTISSENT DES ANIONS EN MOLÉCULES
申请人:NATURAL EXTRACTION SYS LLC
公开号:WO2021158575A1
公开(公告)日:2021-08-12
Various aspects of this patent document relate to bioactive compositions comprising anions that are converted into hydrophobic bioactive molecules either ex vivo prior to administration to a subject or in situ subsequent to administration to a subject. Such compositions display improved bioavailability and pharmacokinetics relative to compositions that comprise the hydrophobic bioactive molecules instead of the anions.