发布求助
文献互助 智能选刊 最新文献

Molbank最新文献

筛选
英文 中文
4-(2-(5-(2-(tert-Butoxycarbonyl)hydrazinecarbonyl)-2-methylthiophen-3-yl)cyclopent-1-enyl)-5-methylthiophene-2-carboxylic Acid 4-(2-(5-(2-(叔丁氧羰基)肼羰基)-2-甲基噻吩-3-基)环戊-1-烯基)-5-甲基噻吩-2-羧酸
IF 0.6
Molbank Pub Date : 2024-01-11 DOI: 10.3390/m1760
Marija Matković
{"title":"4-(2-(5-(2-(tert-Butoxycarbonyl)hydrazinecarbonyl)-2-methylthiophen-3-yl)cyclopent-1-enyl)-5-methylthiophene-2-carboxylic Acid","authors":"Marija Matković","doi":"10.3390/m1760","DOIUrl":"https://doi.org/10.3390/m1760","url":null,"abstract":"Diarylethene (DAE) molecular photoswitches draw attention as building units in the preparation of diverse photoactive molecules. An interesting class of these molecules are photoactive peptides. A way to build DAE moiety into peptides/peptidomimetics is via DAE amino acids, an example of which has been demonstrated in bioactive cyclic peptides, wherein the DAE Fmoc-amino acid was prepared and used. Herein, the preparation of DAE Boc-amino acid is presented using a modified method of synthesis. This contribution to the DAE amino acid collection could be useful in the further enhancement of diversity in designing different routes to photoactive peptides.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":"3 8","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139438086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
(1R/S,7aS/R)-1-Benzyl-1-[2,8-bis(trifluoromethyl)quinolin-4-yl]-hexahydro-oxazolo[3,4-a]pyridin-3-one (1R/S,7aS/R)-1-苄基-1-[2,8-双(三氟甲基)喹啉-4-基]-六氢恶唑并[3,4-a]吡啶-3-酮
IF 0.6
Molbank Pub Date : 2023-12-30 DOI: 10.3390/m1756
Dawid J Kucharski, Przemysław J. Boratyński
{"title":"(1R/S,7aS/R)-1-Benzyl-1-[2,8-bis(trifluoromethyl)quinolin-4-yl]-hexahydro-oxazolo[3,4-a]pyridin-3-one","authors":"Dawid J Kucharski, Przemysław J. Boratyński","doi":"10.3390/m1756","DOIUrl":"https://doi.org/10.3390/m1756","url":null,"abstract":"An unexpected diastereoselective C-alkylation of a mefloquine derivative in up to 57% yield was the result of an attempted Williamson etherification of Boc-mefloquine. The domino reaction involved oxazolidinone ring closure, deprotonation, and stereoselective carbon–carbon bond formation. The structure was confirmed with 2D NMR experiments.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":" April","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139137054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unexpected Formation of the Iodobismuthate Salt (C14H15S2N2)2(C9H10SN)2[Bi4I16] upon Reaction of the Unsaturated Ligand Z-PySCH2CH=CHCH2Spy with BiI3 不饱和配体 Z-PySCH2CH=CHCH2Spy 与 BiI3 反应意外生成碘铋盐 (C14H15S2N2)2(C9H10SN)2[Bi4I16]
IF 0.6
Molbank Pub Date : 2023-12-29 DOI: 10.3390/m1755
Marwa Essid, Chakib Hrizi, Salah Ammar, A. Khatyr, M. Knorr, Annika Schmidt, Carsten Strohmann
{"title":"Unexpected Formation of the Iodobismuthate Salt (C14H15S2N2)2(C9H10SN)2[Bi4I16] upon Reaction of the Unsaturated Ligand Z-PySCH2CH=CHCH2Spy with BiI3","authors":"Marwa Essid, Chakib Hrizi, Salah Ammar, A. Khatyr, M. Knorr, Annika Schmidt, Carsten Strohmann","doi":"10.3390/m1755","DOIUrl":"https://doi.org/10.3390/m1755","url":null,"abstract":"The olefinic dithioether (Z)-1,4-bis(pyridin-2-ylthio)but-2-ene Z-PyS(CH2CH=CHCH2)SPy (L) was prepared by the treatment of cis-ClCH2CH=CHCH2Cl with in situ generated potassium pyridine-2-thiolate Py-SK and analyzed by IR and NMR spectroscopy. To investigate the chemistry of polynuclear iodobismuthate complexes, two equivalents of BiI3 were reacted with L in the MeOH solution to afford the anionic tetranuclear title compound (C14H15S2N2)2(C9H10SN)2[Bi4I116] with a N-protonated (Z)-1,4-bis(pyridin-2-ylthio)but-2-ene as a counterion. Compound 1 was characterized by IR and UV spectroscopy; the formation of a tetranuclear framework was ascertained by a single-crystal X-ray diffraction study performed at 100 K. Furthermore, an unusual Bi(III)-meditated cyclization of one Z-PyS(CH2CH=CHCH2)SPy ligand occurred, affording the bicyclic pyridinium salt 3-vinyl-2,3-dihydrothiazolo[3,2-a]pyridinium bearing a terminal vinyl group, compensating the second negative charge of the Bi4I164− cluster anion. The SCXRD characterization was completed by a Hirshfeld surface analysis, revealing some secondary interactions occurring in the crystal.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":" 7","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139144172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New Antimicrobial Accramycins from Streptomyces sp. MA37 Variant 来自链霉菌 MA37 变异株的新型抗菌药 Accramycins
IF 0.6
Molbank Pub Date : 2023-12-28 DOI: 10.3390/m1754
Aziz Alabed, K. Kyeremeh, Hai Deng
{"title":"New Antimicrobial Accramycins from Streptomyces sp. MA37 Variant","authors":"Aziz Alabed, K. Kyeremeh, Hai Deng","doi":"10.3390/m1754","DOIUrl":"https://doi.org/10.3390/m1754","url":null,"abstract":"In our continued desire to isolate more bioactive compounds from the Streptomyces sp. MA37 variant, ΔaccJ, three new accramycin derivatives have been successfully characterised. The structures of accramycin L-N (1–3) were established by high-resolution mass spectrometry and 1D and 2D nuclear magnetic resonance. The antimicrobial evaluation of accramycin L-N against Staphylococcus aureus, Klebsiella pneumoniae, and Enterobacter cloacae showed minimum inhibitory concentration (MIC) values ranging from 0.77 to 13.02 µg/mL. Accramycin L exhibited the most significant activity against S. aureus. In addition, accramycin L-N (1–3) displayed significant activity against K. pneumoniae at the MIC values of 0.81, 0.77, and 0.79 µg/mL, respectively.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":"32 40","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139148055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
N,N′-Dipropyloxamide 产品名称
IF 0.6
Molbank Pub Date : 2023-12-22 DOI: 10.3390/m1753
E. Podda, Eleanor Dodd, M. Arca, M. Aragoni, Vito Lippolis, S. Coles, Anna Pintus
{"title":"N,N′-Dipropyloxamide","authors":"E. Podda, Eleanor Dodd, M. Arca, M. Aragoni, Vito Lippolis, S. Coles, Anna Pintus","doi":"10.3390/m1753","DOIUrl":"https://doi.org/10.3390/m1753","url":null,"abstract":"N,N′-Dipropyloxamide (1) was synthesised by the reaction between diethyloxalate and n-propylamine in ethanol. Compound 1 was fully characterised by both microanalytical (elemental analysis, melting point determination) and spectroscopic means (FT-IR and NMR spectroscopy). Crystals suitable for single crystal X-ray diffraction were isolated by the slow evaporation of a methyl alcohol solution of the compound. The resulting crystal structure shows the prominent role exerted by intermolecular hydrogen bonds in the crystal packing.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":"37 3","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138946046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bis(2,6-di(pyridin-2-yl)pyridin-4-yl)-6,6′-(1,2-diselanediyl)dihexanoate 双(2,6-二(吡啶-2-基)吡啶-4-基)-6,6′-(1,2-二壬二基)二己酸酯。
IF 0.6
Molbank Pub Date : 2023-12-20 DOI: 10.3390/m1752
E. Popa, A. Andelescu, Valentin Badea, Paula Svera M Ianăşi, Elisabeta I. Szerb
{"title":"Bis(2,6-di(pyridin-2-yl)pyridin-4-yl)-6,6′-(1,2-diselanediyl)dihexanoate","authors":"E. Popa, A. Andelescu, Valentin Badea, Paula Svera M Ianăşi, Elisabeta I. Szerb","doi":"10.3390/m1752","DOIUrl":"https://doi.org/10.3390/m1752","url":null,"abstract":"The present paper describes the preparation and characterization of a new dinuclear ligand based on terpyridine featuring a diselenide unit. This new compound was synthesized in a two-step procedure that first involved the insertion of the diselenide moiety on a carboxylic acid and was followed by a Steglich esterification reaction between the biscarboxylic acid containing the diselenide unit and 2,6-di(pyridin-2-yl)pyridin-4-ol (tpyOH). The title compound was characterized via FT-IR, Raman, NMR (1D and 2D), and UV-Vis spectroscopies and elemental analysis. Emission properties were investigated.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":"105 17","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138958711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
(Z)-1-Benzyl-5-(4-bromophenyl)-5-hydroxy-4-(2-oxomorpholin-3-ylidene)pyrrolidine-2,3-dione (Z)-1-苄基-5-(4-溴苯基)-5-羟基-4-(2-氧代吗啉-3-亚基)吡咯烷-2,3-二酮
IF 0.6
Molbank Pub Date : 2023-12-18 DOI: 10.3390/m1751
N. A. Tretyakov, A. N. Maslivets
{"title":"(Z)-1-Benzyl-5-(4-bromophenyl)-5-hydroxy-4-(2-oxomorpholin-3-ylidene)pyrrolidine-2,3-dione","authors":"N. A. Tretyakov, A. N. Maslivets","doi":"10.3390/m1751","DOIUrl":"https://doi.org/10.3390/m1751","url":null,"abstract":"The reaction of 8-(4-bromobenzoyl)-3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazine-1,6,7-trione with benzylamine in acetonitrile at room temperature afforded a good yield of (Z)-1-benzyl-5-(4-bromophenyl)-5-hydroxy-4-(2-oxomorpholin-3-ylidene)pyrrolidine-2,3-dione. The compound was fully characterized.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":" 12","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138964509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
4-(5-Benzyl-3-((4-fluorophenyl)sulfonyl)-5-methyl-4,5-dihydrofuran-2-yl)-2-nitrobenzamide 4-(5-苄基-3-((4-氟苯基)磺酰基)-5-甲基-4,5-二氢呋喃-2-基)-2-硝基苯甲酰胺
IF 0.6
Molbank Pub Date : 2023-12-15 DOI: 10.3390/m1750
Oscar Leonardo Avendaño Leon, Christophe Curti, Hussein El-Kashef, Youssef Kabri, S. Redon, Patrice Vanelle
{"title":"4-(5-Benzyl-3-((4-fluorophenyl)sulfonyl)-5-methyl-4,5-dihydrofuran-2-yl)-2-nitrobenzamide","authors":"Oscar Leonardo Avendaño Leon, Christophe Curti, Hussein El-Kashef, Youssef Kabri, S. Redon, Patrice Vanelle","doi":"10.3390/m1750","DOIUrl":"https://doi.org/10.3390/m1750","url":null,"abstract":"As part of our ongoing attempt to broaden the applications of the amidoxime moiety as a potential source of new antileishmanial agents, this study focuses on the product 4-(5-Benzyl-3-((4-fluorophenyl)sulfonyl)-5-methyl-4,5-dihydrofuran-2-yl)-2-nitrobenzamide. This unexpected amide was obtained in an 85% yield as the major product with a conventional amidoxime synthesis protocol (Ethanol/Na2CO3) involving the reaction of hydroxylamine and a nitrile group. The formation of this amide derivative instead of the expected amidoxime can be attributed to two complementary effects: the strong electron effect of the nitro group and the influence of ethanol, a polar protic solvent. Alternatively, the desired amidoxime derivative, 4-(5-benzyl-3-((4-fluorophenyl)sulfonyl)-5-methyl-4,5-dihydrofuran-2-yl)-N′-hydroxy-2-nitrobenzimidamide, was obtained in an 80% yield by an alternative protocol (DMSO/KOtBu). This original compound, featuring a nitro group in the ortho position to the amidoxime, will be further evaluated, both in the field of medicinal chemistry and in other relevant areas, highlighting an unusual method to access amidoximes from hindered substrates.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":"5 3","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138997662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
3-Benzoyl-2-hydroxy-3a-[(3-methylquinoxalin-2-yl)methyl]-1H-pyrrolo[2,1-c][1,4]benzothiazine-1,4(3aH)-dione 3-Benzoyl-2-hydroxy-3a-[(3-methylquinoxalin-2-yl)methyl]-1H-pyrrolo[2,1-c][1,4]benzothiazine-1,4(3aH)-dione
IF 0.6
Molbank Pub Date : 2023-12-13 DOI: 10.3390/m1749
E. A. Lystsova, E. E. Khramtsova
{"title":"3-Benzoyl-2-hydroxy-3a-[(3-methylquinoxalin-2-yl)methyl]-1H-pyrrolo[2,1-c][1,4]benzothiazine-1,4(3aH)-dione","authors":"E. A. Lystsova, E. E. Khramtsova","doi":"10.3390/m1749","DOIUrl":"https://doi.org/10.3390/m1749","url":null,"abstract":"The reaction of 3-benzoylpyrrolo[2,1-c][1,4]benzothiazine-1,2,4-trione with 2,3-dimethylquinoxaline afforded 3-benzoyl-2-hydroxy-3a-[(3-methylquinoxalin-2-yl)methyl]-1H-pyrrolo[2,1-c][1,4]benzothiazine-1,4(3aH)-dione in a moderate yield. The compound was fully characterized.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":"40 5","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139003267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Building Triazolated Macrocycles from Bis-Propargylated Calix[4]arenes and Bis-Azidomethylated Azobenzene or Stilbene 从双-丙炔化钙[4]烯和双-叠氮甲基化偶氮苯或二苯乙烯构建三唑大环
IF 0.6
Molbank Pub Date : 2023-12-07 DOI: 10.3390/m1748
Ivan Lentin, Ilia Korniltsev, A. Gorbunov, Dmitry Cheshkov, S. Bezzubov, Vladimir Kovalev, I. Vatsouro
{"title":"Building Triazolated Macrocycles from Bis-Propargylated Calix[4]arenes and Bis-Azidomethylated Azobenzene or Stilbene","authors":"Ivan Lentin, Ilia Korniltsev, A. Gorbunov, Dmitry Cheshkov, S. Bezzubov, Vladimir Kovalev, I. Vatsouro","doi":"10.3390/m1748","DOIUrl":"https://doi.org/10.3390/m1748","url":null,"abstract":"Copper(I)-catalyzed azide-alkyne cycloaddition was employed to construct biscalixarene assemblies from the calix[4]arene dipropargyl ethers and 4,4′-bis-azidomethylated azobenzene or stilbene. Three bis(calixarenes) having the calix[4]arene cores linked to each other by pairs of (E)-azobenzene/stilbene units through four triazole groups were obtained as confirmed by NMR, HRMS and X-ray diffraction data. Nevertheless, the formation of larger macrocycles and polymeric/oligomeric products was found to be the major competing process that seriously limited the applicability of the one-step macrocyclization approach for the construction of photoresponsive biscalixarene assemblies linked by pairs of azobenzene/stilbene units.","PeriodicalId":18761,"journal":{"name":"Molbank","volume":"50 19","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138593014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信