Analogues of the potent adenosine antagonist 5-(3'-hydroxypropyl)-7-methoxy-2-(3'-methoxy-4'-hydroxyphenyl)benzo[b]furan-3-carbaldehyde (XH-14, 1) with alternate substituents in the 2-, 5- and 7-positions have been synthesised. The affinity of these compounds for the Al adenosine receptor has been evaluated using a [H-3]CPX competitive binding assay. This structure-activity study highlighted the importance of the 3-formyl and 5-(3-hydroxypropyl) moieties for high receptor affinity. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis of natural products possessing a benzo[b]furan skeleton
作者:Henning Lütjens、Peter J. Scammells
DOI:10.1016/s0040-4039(98)01371-9
日期:1998.9
A related synthetic strategy has been used to prepare two natural products (XH-14 and ailanthoidol) which possess a benzo[b]furan skeleton. The synthesis of XH-14 involved the use of a palladium-catalyzed cyclization with concomitant carbonylation via insertion of carbon monoxide to introduce regioselectively a formyl group in the 3-position.
相关的合成策略已用于制备两种具有苯并[ b ]呋喃骨架的天然产物(XH-14和艾蒽酚)。XH-14的合成涉及使用钯催化的环化反应,同时通过插入一氧化碳进行羰基化以在3位区域选择性引入甲酰基。
147. The constituents of natural phenolic resins. Part XIX. The oxidation of ferulic acid