Application of the Mitsunobu Reaction for Morphine Compounds. Preparation of 6β-Aminomorphine and Codeine Derivatives
作者:Csaba Simon、Sandor Hosztafi、Sándor Makleit
DOI:10.1080/00397919208020855
日期:1992.3
Abstract By the application of the Mitsunobureaction several new 7 8 6β-aminomorphine and codeine derivatives, carrying a Δ7,8 double bond in ring C have been synthesized. The catalytic hydrogenation of these compounds offered a new stereoselective way for the synthesis of the corresponding 6β-amino-dihydro analogues. The different conformation of ring C of the saturated and unsaturated amino compounds
摘要 通过Mitsunobu反应合成了几种新的7 8 6β-氨基吗啡和可待因衍生物,在C环上带有一个Δ7,8双键。这些化合物的催化氢化为合成相应的 6β-氨基-二氢类似物提供了一种新的立体选择性方法。饱和和不饱和氨基化合物的环 C 的不同构象允许研究构效关系,并且通过不饱和衍生物的氚化可以检查底物 - 受体相互作用。
6 .beta.-Thiomorphine derivatives
申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:US05219861A1
公开(公告)日:1993-06-15
A novel morphine derivative represented by the following general formula: ##STR1## wherein R.sub.1 represents a hydrogen atom, a lower alkyl group or a lower alkanoyl group; R.sub.2 represents a hydrogen atom, a lower alkylthio group, an aryl group, a lower alkoxycarbonylalkyl group, a lower alkyl group or a lower alkanoyl group; R.sub.3 represents a lower cycloalkylmethyl group or an allyl group, and a pharmaceutically acceptable acid addition salt thereof. The compound of the above general formula shows an analgesic activity 5 or more times as high as that of morphine and a narcotic antagonist action. Further, it exhibits an extremely low drug dependence. These properties make it highly useful as an active ingredient of drugs such as analgesics or anesthetics.
δ Opioid Affinity and Selectivity of 4-Hydroxy-3-methoxyindolomorphinan Analogues Related to Naltrindole
作者:Andrew Coop、Richard B. Rothman、Christina Dersch、John Partilla、Frank Porreca、Peg Davis、Arthur E. Jacobson、Kenner C. Rice
DOI:10.1021/jm9807003
日期:1999.5.1
To investigate the effect of the introduction of a 4-phenolic substituent on the delta opioid affinity and selectivity of the indolomorphinans, a range of 4-phenolic analogues of naltrindole were prepared and evaluated in in vitro assays. Although the majority of the ligands displayed poor affinity for all three opioid receptors (mu, kappa, delta), 17-cyclopropylmethyl-6,7-didehydro-4-hydroxy-3-methoxy-6,7:2',3'-indolomorphinan (13) was an exception, displaying excellent delta binding selectivity (delta K-i = 7 nM, mu/delta = 1900, mu/kappa = 1130). GTP-gamma-S functional assays showed 13 to be a selective delta antagonist, albeit with lower potency than naltrindole. Although the reason for the unique profile of 13 could not be determined, these results validate our approach of introducing groups into the indolomorphinans that are known to reduce mu activity, to obtain increased delta selectivity.
Analgesic narcotic antagonists. 6. 7.beta.,8.beta.-Methano- and 7.beta.,8.beta.-epoxydihydrocodeinone
作者:Michael P. Kotick
DOI:10.1021/jm00138a016
日期:1981.6
Reaction of codeinone (2) with CH2N2 in the presence of Pd(OAc)2 yielded mixtures of starting material and (2) and 7 beta, 8 beta-methanodihydrocodeinone (3). Initial resolution of this mixture was achieved via carbonyl reduction followed by chromatography to give pure 7 beta, 8 beta-methanodihydrocodeine (4), which was oxidized to 3. Reaction of the mixture containing 2 and 3 with mercaptoethanol and NaOH [2 leads to 8 beta-[(hydroxyethyl)thio]dihydrocodeinone (5)] allowed selective crystallization of 3. The beta configuration of the cyclopropane ring in 3 was established by cleavage with aqueous HCl to give the 8 beta-(chloromethyl) compound 6, followed by carbonyl reduction and dehalogenation to 8 beta-methyldihydrocodeine (8). Reaction of the N-(cycloalkylmethyl) derivatives (13 and 18) of 2 with CH2N2/Pd(OA)2 gave potential mixed agonist-antagonists and 14 and 19, which were purified by reduction-oxidation (14) or mercaptoethanol-base treatment (19). Compound 2, on oxidation with alkaline peroxide, gave the previously reported 7 beta, 8 beta-epoxydihydrocodeinone (22) as the hemimethanol ketal (21). Compound 3 was about ninefold more potent an agonist than dihydrocodeine, and the N-(cyclopropylmethyl)-7 beta, 8 beta-methano compound 19 had moderately potent mixed agonist-narcotic antagonist properties.