Process for producing ortho-isopropylated phenol derivatives
申请人:Dong Kook Pharmaceutical Co., Ltd.
公开号:US05414156A1
公开(公告)日:1995-05-09
This invention relates to the process for producing ortho-isopropylated phenol derivatives having following general formula (VIII). ##STR1## (in the above formula, R.sub.1 is a hydrogen or a low alkyl group of C.sub.1 -C.sub.4) A process for producing ortho-isopropylated phenol derivatives (VIII) of the present invention is characterized by obtaining position isomer desired by means of Claisen rearrangement of phenyl allyl ether without catalyst in atmosphere, and then obtaining only one isomer by oxidation and reduction of the above-obtained position isomer. According to the present invention, ortho-alkylated phenol derivatives (VIII) having high purity at low temperature and low pressure can be prepared without producing a by-product and requirement of the complicated separation procedure.
clinical anesthetic for a few decades. Its derivative with a three-membered ring, Cipepofol, was found to be equally effective and with less side effects. Here, we report a process for the scale-up total synthesis of Cipepofol. It could be obtained in five steps from the commercially available 2-isopropylphenol. The key reactions involved Claisen rearrangement, Simmons–Smith cyclopropanation, and chiral
A (−)-stereoisomer of formula (I): (formula I), wherein X is H or F; or a pharmaceutically acceptable salt or prodrug thereof, is useful as an anesthetic.
公式(I)的(-)立体异构体:(公式I),其中X为H或F;或其药物可接受的盐或前药,可用作麻醉剂。
Therapeutic compounds
申请人:Pharmacofore, Inc.
公开号:EP2392559A1
公开(公告)日:2011-12-07
A (+)-stereoisomer of formula (I), wherein X is H or F; or a salt thereof; which is useful: as an anesthetic; for inducing or maintaining general anesthesia; for promoting sedation; for promoting an antiemetic effect; for treatment of nausea or vomiting; or for treatment of a migraine.
式(I)的(+)-立体异构体,其中 X 是 H 或 F;或其盐,可用于:麻醉剂;诱导或维持全身麻醉;促进镇静;促进止吐效果;治疗恶心或呕吐;或治疗偏头痛。
[EN] ISOPROPYL PHENOL DERIVATIVE AND PREPARATION METHOD THEREOF<br/>[FR] DÉRIVÉ DE PHÉNOL D'ISOPROPYLE ET SON PROCÉDÉ DE PRÉPARATION<br/>[ZH] 一种异丙基苯酚衍生物及其制备方法