(2-hydroxy)ethyl-thioureas useful as modulators of alpha2B adrenergic receptors
申请人:ALLERGAN SALES, INC.
公开号:US20020161051A1
公开(公告)日:2002-10-31
Compounds of formula (i) and of formula (ii)
1
wherein the symbols have the meaning disclosed in the specification, specifically or selectively modulate &agr;
2B
and/or &agr;
2C
adrenergic receptors in preference over &agr;
2A
adrenergic receptors, and as such are useful for alleviating chronic pain and allodynia and have no or only minimal cardivascular and/or sedatory activity.
readily react with ethereal H2O2 in the presence of catalytic amounts of Na2MoO4-gly or MoO2(acac)2, affording the C═C trans hydroxylation–hydroperoxylation products in good yields with high regio- and stereoselectivity. Use of enantiomers of cyclic substrates resulted in corresponding enantiopure diol-tert-hydroperoxides. The possibility of further conversion of the diol-tert-hydroperoxides into triols
在催化量的Na 2 MoO 4 -gly或MoO 2(acac)2的存在下,一系列烯丙醇易于与醚H 2 O 2反应,从而以高收率提供C═C反羟基化-氢过氧化产物具有高区域选择性和立体选择性。使用环状底物的对映异构体产生相应的对映体纯的二醇-叔氢过氧化物。还举例说明了将二醇-叔氢过氧化物进一步转化为具有包含季中心的分离的叔-过氧基团的三醇或线性结构单元的可能性。
Indole alkaloids. A combined chemical and enzymatic route for eburnane ring construction : Formal synthesis of (−)-Eburnamonine
A stereocontrolled formal synthesis of (−)-eburnamonine 1, a tetracyclic indole alkaloid used as antihypertensive drug, has been achieve through the use of [3,3]-sigmatropic rearrangement (Claisen rearrangement) of the enantiopure β-alkoxy acrylate 4, available from rac-3-ethly-cyclohexenol 3via lipase-catalyzed transesterification
Application of the Palladium(0)-Catalyzed Ullmann Cross-Coupling Reaction in a Total Synthesis of (±)-Aspidospermidine and thus Representing an Approach to the Lower Hemisphere of the Binary Indole - Indoline Alkaloid Vinblastine
作者:Martin G. Banwell、David W. Lupton、Anthony C. Willis
DOI:10.1071/ch05181
日期:——
reaction to give the bicyclic system 5. In contrast, the relatedcompound 46, incorporating tethered enone and azide moieties, engaged in an intramolecular 1,3-dipolar cycloaddition reaction to give, presumably via an intermediate triazoline, the isolable and ring-fused aziridine 47. This was then converted, over two steps, into the previously reported tetrahydrocarbazole 4. Application of established protocols