第 45 卷第 5 期 |  | Vol. 45 No. 5 | 2015 年 10 月 | Oct 2015 |
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所屬欄目:醫藥及中間體
7-苯乙酰氨基-3-(丙-1-烯基)-3-頭孢烯-4-羧酸-4-甲氧基芐酯合成的Wittig反應研究 |
王宗利,侯仲軻*,張宜仲,呂秋波,田黎黎,劉 沖
(浙江國邦藥業(yè)有限公司,浙江 上虞 312369) |
摘 要:以7-苯乙酰胺基-3-氯甲基頭孢烷酸對甲氧基芐酯(GCLE)為原料合成了7-苯乙酰氨基-3-(丙-1-烯基)-3-頭孢烯-4-羧酸-4-甲氧基芐酯(GPRE),并對Wittig反應進(jìn)行了研究。結果標明:氯化鋰存在時(shí),在v(二氯甲烷/mL)∶v(N,N-二甲基乙酰胺/mL)∶w(Wittig試劑/g)=3∶2∶1、反應溫度-10℃的條件下,GPRE Z、E比值超過(guò)13.5,主峰(Z+E)超過(guò)97.0%。 |
關(guān)鍵詞:GCLE;GPRE;Wittig反應 |
中圖分類(lèi)號:TQ465 文獻標識碼: 文章編號:1009-9212(2015)05-0042-04 |
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Study on the Wittig Reaction in the Preparation of GPRE |
WHANG Zong-li, HOU Zhong-ke*, ZHANG Yi-zhong, L?譈 Qiu-bo, TIAN Li-li, LIU Chong
(Zhe Jiang Guo Bang Pharmaceutical Co., Ltd., Shangyu 312369, China) |
Abstract:This paper reported the Wittig reaction using(6R-trans)-5-Thia-l-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 3-chloromethyl-8-oxo-7-[(phenylacetyl)amino]-diphenylmethyl ester(GCLE) as the raw material for the synthesis of 4-methoxybenzyl-7-phenylacetamido-3-(propen-1-alkenyl)-3-cephem-4-carboxylate (GPRE). The results indicated that the Z/E value of GPRE was greater than 13.5, and the Z+E value is greater than 97.0% under the following reaction conditions: Lithium chloride was used as the catalyst; the ratio of dichloromethane to N,N-dimethylacetamide (both in volume) and to Wittig reagent (weight) was 3:2:1; the reaction temperature was of -10℃. |
Key words:GCLE; GPRE; Wittig reaction |
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作者簡(jiǎn)介:王宗利(1977-),男,江蘇睢寧人,工程師,主要從事藥物中間體的合成與研究(E-mail:jianqiu21@sina.com)。
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聯(lián) 系 人: 侯仲軻,研究員,主要從事藥物中間體的合成與研究(E-mail:houzk2008@hotmail.com)。
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收稿日期: 2015-09-1
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