Synthesis and V-ATPase Inhibition of Simplified Lobatamide Analogues
摘要:
[GRAPHICS]Simplified analogues of the lobatamides have been synthesized and evaluated for inhibition of bovine V-ATPase. The salicylate phenol, enamide NH, and the ortho-substitution of the salicylate ester have been shown to be important for V-ATPase inhibitory activity.
This invention provides compounds of formula 1 having the structure
wherein:
X, R1, R2, R3, R4, Z, X, and n are as defined hereinbefore in the specification, which are useful as antineoplastic agents and in the treatment of certain kidney diseases, such as polycystic kidney disease.
Lobatamide C: Total Synthesis, Stereochemical Assignment, Preparation of Simplified Analogues, and V-ATPase Inhibition Studies
作者:Ruichao Shen、Cheng Ting Lin、Emma Jean Bowman、Barry J. Bowman、John A. Porco
DOI:10.1021/ja0352350
日期:2003.7.1
The totalsynthesis and stereochemicalassignment of the potent antitumor macrolide lobatamide C, as well as synthesis of simplified lobatamide analogues, is reported. Cu(I)-mediated enamide formation methodology has been developed to prepare the highly unsaturated enamide side chain of the natural product and analogues. A key fragment coupling employs base-mediated esterification of a beta-hydroxy
报告了有效的抗肿瘤大环内酯洛巴胺 C 的全合成和立体化学分配,以及简化的洛巴胺类似物的合成。已开发出 Cu(I) 介导的烯酰胺形成方法来制备天然产物和类似物的高度不饱和烯酰胺侧链。关键片段偶联采用碱介导的 β-羟基酸和水杨酸氰甲基酯的酯化。已使用相关合成路线制备了三种额外的洛巴胺 C 立体异构体。lobatamide C 的 C8、C11 和 C15 的立体化学是通过立体异构体的比较和结晶衍生物的 X 射线分析来确定的。合成的洛巴胺 C、立体异构体和简化的类似物已被评估用于抑制牛嗜铬颗粒膜 V-ATP 酶。水杨酸苯酚,
Studies Toward the Synthesis of (−)-Zampanolide: Preparation of <i>N</i>-Acyl Hemiaminal Model Systems
作者:Dawn M. Troast、John A. Porco
DOI:10.1021/ol025558l
日期:2002.3.1
[structure: see text] Synthesis of N-acyl hemiaminal model systems related to the side chain of the antitumor natural product zampanolide is reported. Key steps involve oxidative decarboxylation of N-acyl-alpha-amino acid intermediates, followed by ytterbium triflate mediated solvolysis. Evidence for stabilization of the N-acyl hemiaminal moiety in model compounds by an intramolecular hydrogen-bonding
Topochemistry. Part XXXI. Formation of cyclo-octa-1,5-cis,cis-dienes from 1,4-disubstituted s-trans-butadienes in the solid state. A contribution to the problem of C4-versus C8-cyclodimerisation
作者:B. S. Green、M. Lahav、G. M. J. Schmidt
DOI:10.1039/j29710001552
日期:——
Solid penta-1,3-diene-1-carboxylic acid (4), penta-1,3-diene-1-carboxamide (5), buta-1,3-diene-1,4-dicarbonitrile (6), styrylacrylic acid (10), its methyl ester (46), and amide (49)(all trans,trans-configurated), all photodimerise on irradiation (λ > 290 nm), to divinylcyclobutane (C4) derivatives. The structures of the fully characterised photoproducts from (4), (5), (6), and (49) and the light-stability
[EN] SUBSTITUTED QUINAZOLINE DERIVATIVES AND THEIR USE AS TYROSINE KINASE INHIBITORS<br/>[FR] DERIVES DE QUINAZOLINE SUBSTITUES ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE LA TYROSINE KINASE
申请人:AMERICAN CYANAMID COMPANY
公开号:WO1999009016A1
公开(公告)日:1999-02-25
(EN) This invention provides compounds of formula (1) wherein X is C3-7 cycloalkyl, pyridinyl, pyrimidinyl or phenyl ring optionally substituted as described in claim 1, R1, R3 and R4 are chosen from the groups listed in claim 1. R2 is chosen from various unsaturated acyl groups listed in claim 1, with certain compounds being disclaimed. Use as tyrosine kinase inhibitors for the treatment of cancer and certain kidney diseases such as polycystic kidney disease.(FR) Cette invention concerne des composés de la formule (1) dans laquelle X représente C3-7 cycloalkyle, pyridinyle, pyrimidinyle ou phényle éventuellement substitué et décrit dans la revendication 1, R1, R3 et R4 sont choisis dans les groupes énumérés dans la revendication 1. R2 est choisi parmi plusieurs groupes acyles insaturés énumérés dans la revendication 1, certains composés n'étant pas revendiqués. Ces composés jouent le rôle d'inhibiteur de la la tyrosine kinase pour le traitement du cancer et de certaines maladies des reins telles que la maladie polykystique des reins.