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ChemInform Abstract: Chemistry of Macrocyclic β‐Lactam: An Overveiw
ChemInform, 2015AbstractReview: [44 refs.
Hari Narayan Pati +3 more
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Complexation of Eu3+ with a macrocyclic lactam receptor: Experimental and theoretical study
Journal of Molecular Structure, 2013Abstract From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium Eu3+(aq) + 3A−(aq) + 1 (nb) ⇔ 1·Eu3+(nb) + 3A−(nb) taking place in the two-phase water–nitrobenzene system ( A - = CF 3 SO 3 - ; 1 = macrocyclic lactam receptor – see Scheme 1 ; aq ...
Emanuel Makrlík +3 more
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Synthesis of Macrocyclic Lactams in Organized Media
1998Lactamization was studied in a micellar environment using the novel carboxyl-activating agent, N-hexadecyl-2-chloropyridinium iodide (C16PyCl, I¯). ω-amino acids were macrocyclized successfully in various surfactantless microemulsions containing formamide or traces of water and using the classical Mukayama reagent(C1PyCl, I¯).
A. Caparros +3 more
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Stereoselective synthesis of bis-β-lactam grafted macrocycles
Tetrahedron Letters, 2006The synthesis of a series of macrocyclic bis-β-lactam derivatives via a highly stereoselective (2+2) cycloaddition is described.
Natarajan Arumugam +1 more
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Synthesis of aza-crown analogues and macrocyclic bis-lactams with sucrose scaffold
Carbohydrate Research, 20172,3,3',4,4'-Penta-O-benzylsucrose was converted into the corresponding diaminoalcohol which was used as a key building block in the synthesis of the analogues of aza-crown ethers and bis-lactams.
Michał, Kowalski, Sławomir, Jarosz
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Using Cross-Metathesis to Couple
Grubbs' second generation ruthenium catalyst was used to couple the amino acid l-phenylalanine to a 17-membered lactam, using cross-metathesis with an E-alkene favored in the process. The best coupling conditions gave the product in 48% yield. The reversibility of the process was also confirmed.
Eric, Enholm, Tammy, Low
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Synthesis of 1,3-bridged β-lactams embedded in a macrocyclic structure
Tetrahedron, 2008Abstract A new approach to N1–C3 bridged macrocyclic β-lactams has been developed. Orthogonal functional groups' protection combined with RCM has allowed the construction of the bicyclic systems bearing a β-lactam motif. These systems could represent a structural alternative to the actual lactamic antibiotics and may be further transformed into a ...
Miguel A. Sierra +4 more
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ChemInform Abstract: Synthesis of New Macrocyclic Lactames, Lactones, and Thiolactones.
ChemInform, 1997AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. A. YAVOLOVSKII +2 more
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Transamidation reactions in the formation of macrocyclic lactams. A total synthesis of celacinnine
Tetrahedron Letters, 1980Abstract The macrocyclic spermidine alkaloid, celacinnine, has been synthesized by methods involving successive ring expansion reactions. One route starts with 4-phenyl-2-azetidinone; another, with piperidazine.
Harry H. Wasserman +2 more
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The structure of hitachimycin, a novel macrocyclic lactam involving β-phenylalanine
Tetrahedron Letters, 1982Abstract The structure of hitachimycin ( 1 ) has been determined by NMR spectrometry and chemical reactions. The antibiotic is a novel 19-membered macrocyclic lactam possessing a β-phenylalanine moiety.
Satoshi Ōmura +3 more
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