1) carboxyl group protected
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羧基保护
1.
The influencing factors of condensation reaction were investigated such as anhydrides, base agent, temperature, carboxyl group protected of Gly and Asp.
探讨了成酐和碱性试剂 ,反应温度 ,甘氨酸和天冬氨酸羧基保护等对缩合反应的影响。
3) Benzylated mannopyranosyl carboxylates
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苄基保护甘露糖羧酸酯
4) benzyl protection
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苄基保护
1.
In Route two, starting from dopamine, the target compound was obtained via total 9 steps including benzyl protection, amidation, cyclizati.
路线二,以盐酸多巴胺为起始原料经苄基保护、酰化、环合、还原、脱保护等9步反应后得到目标化合物1,总收率48。
5) hydroxyl protection
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羟基保护
1.
5,6-Dihydroxyindole was prepared from homoveratronitrile,hydrochloride/pyridine,benzyl chloride,potassium carbonate,nitric acid and cyclohexene by means of demethylation,hydroxyl protection,nitration and reductive ring closure.
本文以3,4-二甲氧基苯乙腈、氯化氢/吡啶、氯化苄、碳酸钾、浓硝酸和环己烯等为主要原料,经去甲基化、羟基保护、硝化及还原环合四步反应合成5,6-二羟基吲哚。
6) amino protection
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氨基保护
1.
In this paper,we show some general methods of amino protection and some protective groups,and also give a few examples to indicate their applications in organic synthesis.
综述了常用的氨基保护方法和保护基,并列举了大量实例说明其在有机合成中的应用。
2.
Effects of different amino protection groups on fluorination reaction of α-hydroxyl-γ-amino-phosphonate were investigated.
比较了不同氨基保护基对α-羟基-γ-氨基磷酸酯亲核氟化反应的影响,以Boc,Ts和Bz保护氨基时未得到预期的氟化产物;以Phth,Fmo和CH3OCO-保护氨基时可得到氟化产物,其中Phth保护氨基的效果最好,氟化产物的收率42
补充资料:邻羧基苯硫代磺酸-邻羧基苯基酯
分子式:
CAS号:
性质:熔点230℃。用邻巯基苯甲酸与氯或硫酸酰氯反应制得。本试剂与烷基硫醇、芳基硫醇、杂环硫醇及巯基氨基酸等反应,生成不对称二硫化物(o-HOOCC6H4-SSR;R=烷基、芳基、杂环基及氨基酸基)。后者用硼氢化钠还原,可得到原来的硫醇。因而用于纯化、鉴别或保护硫醇。
CAS号:
性质:熔点230℃。用邻巯基苯甲酸与氯或硫酸酰氯反应制得。本试剂与烷基硫醇、芳基硫醇、杂环硫醇及巯基氨基酸等反应,生成不对称二硫化物(o-HOOCC6H4-SSR;R=烷基、芳基、杂环基及氨基酸基)。后者用硼氢化钠还原,可得到原来的硫醇。因而用于纯化、鉴别或保护硫醇。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条