Etodolic acid and related compounds. Chemistry and antiinflammatory actions of some potent di- and trisubstituted 1,3,4,9-tetrahydropyrano[3,4-b]indole-1-acetic acids
作者:Christopher A. Demerson、Leslie G. Humber、Adolph H. Philipp、Rene R. Martel
DOI:10.1021/jm00225a010
日期:1976.3
4-b]indole-1-acetic acids bearing one, or two, substituents on the benzene ring has been synthesized via the acid-catalyzed condensation of a substituted tryptophol with ethyl propionylacetate or ethyl butyrylacetate. Antiinflammatory and ulcerogenic effects were examined and the results show that 1, 8-diethyl-1, 3, 4, 9-tetrahydropyrano[3, 4-b]indole-1-acetic acid (etodolic acid, USAN) is a potent agent, particularly
一系列在苯环上带有一个或两个取代基的37种1-乙基和1-n-丙基-1,3,4,9-四氢吡喃[3,4-b]吲哚-1-乙酸通过取代的色酚与丙酸乙酯或丁酸乙酯的酸催化缩合反应合成。检查了抗炎和促溃疡作用,结果表明1、8-二乙基-1、3、4、9-四氢吡喃并[3,4-b]吲哚-1-乙酸(依托度酸,USAN)是有效的药物,在慢性大鼠炎症模型(佐剂性关节炎模型中,ED50 0.7 + 1-0.1 mg / kg po)特别有效,并且在同一物种中具有相对较低的急性致溃疡性。
Photochemical α-carboxyalkylation of tryptophols and tryptamines <i>via</i> C–H functionalization
strategy activated the C-Br bonds of α-bromo-alkylcarboxylic esters to provide carbon-centered radicals under the catalysis of Ir(iii) photocatalyst and coupled with indole derivatives. This methodology displayed wide functional group tolerance and excellent regioselectivity, and was applied to the late-stage functionalization and preparation of indole-containing hybrids.
Ligand-enabled Ir-catalyzed intermolecular diastereoselective and enantioselective allylic alkylation of 3-substituted indoles
作者:Xiao Zhang、Wen-Bo Liu、Hang-Fei Tu、Shu-Li You
DOI:10.1039/c5sc01772f
日期:——
An Ir-catalyzed asymmetric allylic alkylation of 3-substituted indoles is reported. The reaction provides indoline products containing multiple contiguousstereocenters with high site-, regio-, diastereo- and enantioselectivities in onestep from a wide range of readily available starting materials. The key to this method is the high level of diastereocontrol enabled by an iridium catalyst derived
报道了 Ir 催化的 3-取代吲哚的不对称烯丙基烷基化。该反应从多种容易获得的起始原料中一步获得含有多个连续立体中心的二氢吲哚产物,具有高位点选择性、区域选择性、非对映选择性和对映选择性。该方法的关键是由源自N-芳基亚磷酰胺配体 (Me-THQphos, 1c ) 的铱催化剂实现的高水平非对映控制。
Copper-catalyzed cascade azidation–cyclization of tryptophols and tryptamines
作者:Panpan Zhang、Wangsheng Sun、Guofeng Li、Liang Hong、Rui Wang
DOI:10.1039/c5cc03964a
日期:——
The copper-catalyzed cascade azidation–cyclization of tryptophols and tryptamines has been developed.
铜催化的色胺酸酚和色胺的级联偶氮化-环化反应已经被开发出来。
Asymmetric Dearomatization of Indole Derivatives with N‐Hydroxycarbamates Enabled by Photoredox Catalysis
作者:Yuan‐Zheng Cheng、Qing‐Ru Zhao、Xiao Zhang、Shu‐Li You
DOI:10.1002/anie.201911144
日期:2019.12.9
enantioselectivities. Mechanistic studies show that the realization of two sequential single-electron transfer oxidations of the indole derivatives is key, generating the configurationally biased carbocation species while providing the source of stereochemical induction. These results not only provide an efficient synthesis of enantioenriched indoline derivatives, but also offer a novel strategy for further designing