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以1,2,3,4-四氢异喹啉为原料,先依次与二碳酸二叔丁酯、亚氯酸钠反应得到N-Boc-1,2,3,4-四氢-1-异喹啉酮,再和芳基格氏试剂反应得到分子内不对称还原胺化反应的底物,最后以ax-Josiphos为手性配体,[Ir(COD)Cl]2为金属前体,在Ti(OiPr)4和40%HBr溶液组成的催化体系中合成了8个手性1-芳基四氢异喹啉类化合物,其结构经1H NMR和13C NMR表征。该路线提供了一种以廉价1,2,3,4-四氢异喹啉为原料高效合成手性1-芳基四氢异喹啉类衍生物的新方法,为索利那新等药物的合成提供了新路径。
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本文报道了R和S-1-(3'-溴-4'-甲氧基)苄基-2-甲基-6-甲氧基-7-羟基-1,2,3,4-四氢异喹啉的合成。 相似文献
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异喹啉酮类化合物具有重要药理活性,本文在合成1,2,3,4-四氢-2-苄基异喹啉酮-4衍生物的基础上,参照Hinton方法制备2-异丙基-1,3-二氢-4(1H)异喹啉酮(1),用(1)进一步与芳醛、羟胺、酰氯及苯肼反应得到了相应的衍生物(3a-6e)。 相似文献
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介绍了我校制药工程专业和药物制剂专业开展的一个综合药物化学实验,该实验以合成PARP1抑制剂的关键中间体6,7-二甲氧基-1,2,3,4-四氢异喹啉-3-羧酸甲酯为目标分子,该化合物是作者课题组目前正在研究的PARP1抑制剂的关键中间体,其合成方法是以L-3,4-二甲氧基苯丙氨酸为原料,甲醇为溶剂,二氯亚砜为脱水剂,室温条件下合成L-3,4-二甲氧基苯丙氨酸甲酯,再以多聚甲醛为原料,二氯甲烷为溶剂,三氟乙酸为催化剂,经Pictet-Spengler反应合成6,7-二甲氧基-1,2,3,4-四氢异喹啉-3-羧酸甲酯,目标化合物的结构使用1H NMR、MS等分析方法进行表征。本实验有益于激发学生独立思考能力和研究意识,训练学生的综合实验操作技能和有机化合物的结构鉴定能力,培养学生掌握药物合成科学研究的基本思路和基本方法。 相似文献
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1 INTRODUCTION In recent years, chiral β-amino alcohols have attracted much attention due to their special bio- logical functions and catalytic activities. Chiral β- amino alcohol moieties are usually found not only in natural products (e.g., cinchona alkaloids, ephe- drine, toxal, etc.) with special biological activities[1, 2], but also critical structural segments of some syn- thesized biologically active compounds, such as adrenergic agonists or antagolist[3, 4] and inhibitors for HI… 相似文献
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Pyrolysis of the 3-O-allyl derivative 7 of isovanillin followed by alkylation of the derived allylphenol 8 afforded a series of benzaldehyde derivatives 9-11 each of which was transformed by initial treatment with methylmagnesium bromide followed by oxidation of the corresponding alcohols with activated manganese dioxide into a series of ketones 15-17. Palladium(0) catalysed isomerization of the double bond in the prop-2′-enyl side-chain afforded ketones 36-38 which were subjected to the Corey-Bakshi-Shibata asymmetric reduction protocol to afford the R-3-alkoxy-1-(1′-hydroxyethyl)-4-methoxy-2-(1″-propenyl) benzenes 42-44 in yields of approximately 60% and with ee's of 75%. 相似文献
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Sergeyev S Schär M Seiler P Lukoyanova O Echegoyen L Diederich F 《Chemistry (Weinheim an der Bergstrasse, Germany)》2005,11(8):2284-2294
The double Bingel reaction of fullerene C60 with bismalonates attached to a Tr?ger base derived tether afforded trans-1, trans-2, trans-3, and trans-4 bisadducts with excellent regioselectivity. In particular, enantiomerically pure bisadducts with inherently chiral trans-2 or trans-3 addition patterns were prepared starting from enantiomerically pure bismalonates. The absolute configuration of the trans-2 and trans-3 bisadducts was established from their CD spectra. The excellent diastereoselectivity in the double additions to give the trans-2 bisadducts is particularly remarkable given the large distance between the two reacting bonds in opposite hemispheres of the fullerene that is spanned by the tether. Now, all inherently chiral double addition patterns are readily available by tether-directed functionalization using appropriate chiral, nonracemic spacers. 相似文献
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Helmut Link 《Helvetica chimica acta》1978,61(7):2419-2427
Synthesis of 1,3,4-Oxadiazoles and 4,5-Dihydro-l,2,4-triazines from 3-Dimethylamino-2,2-dimethyl-2 Hazirine and Carbohydrazides 3-Dimethylamino-2, 2-dimethyl-2 H-azirine ( 1 ) reacts with aromatic carbohydrazides to give 2-(1-amino-1-methylethyl)-5-aryl-1, 3, 4-oxadiazoles ( 7 , 10 , 11 ). With ethyl carbazate the azirine 1 forms the aminoester 15 , which is easily cyclized to the 4, 5-dihydro-1, 2, 4-triazin-3 (2H)-one 16 . From the reaction of 1 with oxamohydrazide ( 17 ) and oxalodihydrazide 19 the 4, 5-dihydro-1, 2, 4-triazin-3-carboxamide 18 and the symmetric compound 20 , respectively, have been isolated. Reactions supporting the structures of the new compounds are described. 相似文献
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邻位取代1,2-二苯乙烯催化不对称二羟基化反应张生勇,孙晓莉(第四军医大学化学教研室西安710032)关键词 不对称二羟基化,手性二醇近年催化的反式稀烃的不对称二羟基化反应取得明显进展[1],但催化的邻位取代的1,2-二苯乙烯类化合物的不对称二羟基化... 相似文献
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1-氮杂双环[2,2,2]辛-3-基胺是制备5-羟色胺拮抗剂药物盐酸帕洛诺司琼等的重要中间体,手性帕洛诺司琼可以通过中间体的手性分离来制备。用柱前衍生化-反相高效液相色谱法对1-氮杂双环[2,2,2]辛-3-基胺对映体进行分离并建立了检测方法。结果表明,用2,3,4,6-四-O-乙酰基-β-D-葡萄糖异硫氰酸酯(GITC)为柱前手性衍生化试剂,C18柱(300mm×4.6mm,5μm)为色谱柱,可将1-氮杂双环[2,2,2]辛-3-基胺对映体分离,其它色谱条件:流动相组成为[甲醇-乙腈-0.01mol/L四丁基溴化铵(20∶10∶75,V/V)]-(三乙胺)0·1%-(冰醋酸)0.15%,流速0.7mL/min,检测波长为266nm。在选择的测定条件下,衍生后的两非对映异构体分离度达4以上。 相似文献
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M. S. Skorobogatova Ya. A. Levin O. A. Raevskii 《Chemistry of Heterocyclic Compounds》1970,6(9):1092-1096
A single stage method has been developed for the preparation of 2, 5-dialky-1, 3, 4-oxadiazoles from aliphatic carboxylic acids, by boiling with hydrazine hydrochloride in phosphoryl chloride. A mechanism for the synthesis is suggested. The oxadiazoles are characterized, and the group refractivity of the 1, 3, 4-oxadiazole ring has been determined.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1171–1175, September, 1970. 相似文献