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Hartmann M, Bauer HJ, Heinrich E, Wermann K. Synthesis and Hydrolysis of Phosphate Ester Derivatives of 3(5)-Methylpyrazole and 3-Amino-1,2,4-Triazole. SYNTHETIC COMMUN 1986. [DOI: 10.1080/00397918608056393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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302
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Hünig S, Reichelt H. Trimethylsilylcyanid als Umpolungsreagens, XI. Über den ambidenten Charakter substituierter Allyl-Anionen. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/cber.19861190604] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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303
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Kessler H, Kutscher B. Synthese von cyclischen Pentapeptidanalogen des Thymopoietins. – Cyclisierungen mit Carbodiimid und 4-(Dimethylamino)pyridin. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/jlac.198619860507] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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304
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Dyong I, Merten H, Thiem J. Synthesen biologisch wichtiger Kohlenhydrate, 34. Darstellung 3-C-Methyl-verzweigter Hex-2-enopyranose-Derivate und Untersuchung zur Umlagerung ihrer Glycosyltrichloracetimidate. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/jlac.198619860402] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Dyong I, Hagedorn HW, Thiem J. Antibioticamodelle, 7. Diastereoselektiver Aufbau eines Rhodomycinon-Modells aus D-Glucose. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/jlac.198619860313] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bader H, Reissig HU. The first 4-dialkylamino-1,2-dihydropyridine derivatives: synthesis and basic reactions. Tetrahedron 1986. [DOI: 10.1016/s0040-4020(01)87489-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tautomeric rearrangements and intramolecular Diels-Alder reactions of dicyanovinyl and (cyanoimino)alkyl groups in the tropolone series. Tetrahedron Lett 1986. [DOI: 10.1016/s0040-4039(00)84632-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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309
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Bohlmann F, Zdero C. Stevisalicinon, ein neuer Diterpentyp, sowie weitere Inhaltsstoffe ausStevia-Arten. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/jlac.198519850905] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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310
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Hoppe D, Hanko R, Brönneke A, Lichtenberg F, van Hülsen E. Metallierte Stickstoff-Derivate der Kohlensäure in der organischen Synthese, XXVII. – Homoaldol-Reaktion, VII. Lithiierung acyclischerN,N-Dialkylcarbamidsäure-2-alkenylester; Silylierung und γ-selektive α-Hydroxyalkylierung von Homoenolat-Reagenzien. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/cber.19851180723] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Grehn L, Ragnarsson U. Erschöpfendetert-Butoxycarbonylierung von Peptid-Stickstoffatomen. Angew Chem Int Ed Engl 1985. [DOI: 10.1002/ange.19850970626] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Storck W, Mancke G. Polymer-gebundenes4-[n-(3-hydroxypropyl)-N-methylamino]pyridin. Katalytische effekte beireaktionen mit phenylisocyanat. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0304-5102(85)80024-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bender A, Günther D, Wingen R. 2-Oxosulfonamide, II. Reaktionen von 2-Oxosulfonamiden mit Carbonylverbindungen. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/jlac.198519850319] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Haller R, Ashauer U. Reduktionen heterocyclischer 9-Oxobicyclo[3.31]nonan-1,5-dicarbonsäurealkylester mit komplexen Metallhydriden zu dreiwertigen Alkoholen. Arch Pharm (Weinheim) 1985. [DOI: 10.1002/ardp.19853180609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Jakupovic J, Baruah R, Bohlmann F, King R, Robinson H. New alicyclic diterpenes and ent-labdanes from gutierrezia solbrigii. Tetrahedron 1985. [DOI: 10.1016/s0040-4020(01)82348-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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317
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Geffken D. 3-Hydroxy-1,3-oxazinan-4-one und 1,4,2-Dioxazole aus 3-Hydroxycarbohydroxamsäuren und Carbonylverbindungen. Arch Pharm (Weinheim) 1985. [DOI: 10.1002/ardp.19853181007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Grehn L, Ragnarsson U. Eine bequeme Methode zur Herstellung von 1-(tert-Butoxycarbonyl)pyrrolen. Angew Chem Int Ed Engl 1984. [DOI: 10.1002/ange.19840960410] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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321
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Der 2-(4-pyridyl)Ethoxycarbonyl-(4-Pyoc)-rest - eine hydrophile, säure- und basenstabile aminoschutzgruppe für die peptidsynthese. Tetrahedron Lett 1984. [DOI: 10.1016/s0040-4039(01)91077-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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322
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Fittkau S, Jahreis G. Thermitase - eine thermostabile Serinprotease. III. Synthese von N-Acyl-peptidmethylketonen als reversible Enzyminhibitoren. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/prac.19843260108] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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323
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Krohn K, Klimars M, Ko¨hle HJ, Ebeling E. Synthesis of ζ -pyrromycinone, 7-deoxyauramycinone, and 7-deoxyaklavinone via ketoester cyclizatiON 1). Tetrahedron 1984. [DOI: 10.1016/s0040-4020(01)88798-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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324
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Jahreis G, Smalla K, Fittkau S. Thermitase - eine thermostabile Serinprotease. II. Synthese von substratanalogen Peptidchlormethylketonen als potentielle irreversible Enzyminhibitoren. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/prac.19843260107] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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325
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Gnauck R. Gaschromatographische trennung und identifizierung polyfunktioneller polyetheralkohole. J Chromatogr A 1984. [DOI: 10.1016/s0021-9673(01)87804-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Aebi JD, Sutter MA, Wasmuth D, Seebach D. Enantiomerenreine Synthesebausteine aus verzweigter Äpfelsäure. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/jlac.198319831207] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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328
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Reetz MT, Schwellnus K, Hübner F, Massa W, Schmidt RE. Lewis-Säure-bedingte α-tert-Alkylierung von Carbonsäuren und Carbonsäureestern. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/cber.19831161119] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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329
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Klein C, Schulz G, Steglich W. Umwandlung phenolischer α-Aminosäuren in α-Ketosäuren. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/jlac.198319830918] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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330
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Jung G, Carrera C, Brückner H, Bessler WG. The Mitogenic Principle ofEscherichia coli Lipoprotein: Synthesis, Spectroscopic Characterization, and Mitogenicity ofN-Palmitoyl-S-[(2R,)-2,3-dipalmitoyloxypropyl]-(R)-cysteine Methyl Ester. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/jlac.198319830916] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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331
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Effenberger F, Brodt W, Zinczuk J. RegioselektiveN- bzw.O-Tritylierung von 2(1H)-Pyridon — (Triphenylmethyl)pyridone als Tritylierungsagentien. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/cber.19831160903] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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332
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Koeniger N, Veith HJ. Glyceryl-1,2-dioleate-3-palmitate, a brood pheromone of the honey bee (Apis mellifera L.). ACTA ACUST UNITED AC 1983. [DOI: 10.1007/bf01989801] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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333
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Müller KH, Kaiser C, Pillat M, Zipperer B, Froom M, Fritz H, Hunkler D, Prinzbach H. cis,trans-Oxaaza-bis-σ-homobenzole – 4H-1,4-Oxazocine. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/cber.19831160711] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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334
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Hartke K, Kohl A, Kämpchen T. Versuche zur acylotropen und silylotropen Tautomerie bei 1,5-Diacylcyclopentadienen und 6-Aminofulven-1-ketiminen. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/cber.19831160721] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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335
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Schneider HD, Tamm C. Nucleoside und Nucleotide. Teil 20. Synthese von Desoxyribooligonucleotiden nach der Diester- und Triestermethode mit 2(1H)-Pyrimidinon als Base. Helv Chim Acta 1983. [DOI: 10.1002/hlca.19830660131] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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337
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Schneiderwind RG, Ugi I. Die 2,2,2-trichlor-t-butyloxycarbonyl-gruppe, eine neue n-schutzgruppe für oligonucleotidsynthesen. Tetrahedron 1983. [DOI: 10.1016/s0040-4020(01)91939-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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338
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Fischer GW, Jentzsch R, Riemer F. Vinyloge Acylverbindungen. XX. Reaktivit�t und Toxizit�t arylsubstituierter ?-Chlorvinylketone, ?-Chlorvinylaldehyde und ?-Chlorvinylmethyleniminiumsalze. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/prac.19833250108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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339
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Welzel P, Stein H, Milkova T. 14β-Hydroxysteroide, VII. Synthese von Digoxigenin und Digitoxigenin aus Desoxycholsäure. ACTA ACUST UNITED AC 1982. [DOI: 10.1002/jlac.198219821203] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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340
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Desulfonyloxylations of some secondary p-toluenesulfonates of glycosides by lithium triethylborohydride; a high-yielding route to 2- and 3-deoxy sugars. Carbohydr Res 1982. [DOI: 10.1016/0008-6215(82)85023-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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341
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Hirth G, Barner R. Synthese von Glyceryl�therphosphatiden 1. Mitteilung Herstellung von 1-O-Octadecyl-2-O-acetyl-sn-glyceryl-3-phosphorylcholin1 (?Platelet Activating Factor?), des Enantiomeren sowie einiger analoger Verbindungen. Helv Chim Acta 1982. [DOI: 10.1002/hlca.19820650339] [Citation(s) in RCA: 84] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Herstellung von Argininpeptiden mitN 7,N 8-(1,2-Dihydroxycyclohex-1,2-ylen)-Schutz. MONATSHEFTE FUR CHEMIE 1982. [DOI: 10.1007/bf00799922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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343
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Wamhoff H, Hendrikx G, Ertas M. Heterocyclische β-Enaminoester, 29. BasenkatalysierteN-Methylenverknüpfung mit Formaldehyd — Neue Bis(1,3-oxazine). European J Org Chem 1982. [DOI: 10.1002/jlac.198219820311] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sorg B, Fürstenberger G, Berry DL, Hecker E, Marks F. Preparation of retinoic acid esters of phorbol derivatives. J Lipid Res 1982. [DOI: 10.1016/s0022-2275(20)38141-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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345
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Kraus W, Kypke K, Bokel M, Grimminger W, Sawitzki G, Schwinger G. Surenolacton, ein neues Tetranortriterpenoid-A/B-Dilacton ausToona sureni [Blume] Merrill (Meliaceae). ACTA ACUST UNITED AC 1982. [DOI: 10.1002/jlac.198219820110] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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346
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Anders E, Ga�ner T. Synthese und Eigenschaften von N-[1-(Arylcarbonyloxy)alkyl]pyridiniumsalzen. Angew Chem Int Ed Engl 1982. [DOI: 10.1002/anie.198206750] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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347
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Hoppe D, Lichtenberg F. Diastereoselektive Homoaldol-Reaktion mit einer (1-Oxycrotyl)aluminium-Verbindung, einem Homoenolat-�quivalent desn-Butanals. Angew Chem Int Ed Engl 1982. [DOI: 10.1002/anie.198209610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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348
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Fluorodaturatin und Homofluorodaturatin?zwei neue ?-Carbolinderivate in Samen von. MONATSHEFTE FUR CHEMIE 1981. [DOI: 10.1007/bf00900008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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349
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Wang SS, Tam JP, Wang BS, Merrifield RB. Enhancement of peptide coupling reactions by 4-dimethylaminopyridine. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1981; 18:459-67. [PMID: 7341528 DOI: 10.1111/j.1399-3011.1981.tb03007.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
4-Dimethylaminopyridine (DMAP) was found to be useful in the enhancement of peptide coupling reactions mediated by dicyclohexylcarbodiimide or symmetrical anhydrides. In an automated synthesis of the model heptapeptide Boc-Ala-Cle-Ile-Val-Pro-Arg(Tos)-Gly-OCH2-Resin (Cle, cycloleucine), the efficiencies of various coupling methods such as dicyclohexylcarbodiimide, dicyclohexylcarbodiimide plus 1-hydroxybenzotriazole, and symmetrical anhydride were compared with that of dicyclohexylcarbodiimide plus 4-dimethylaminopyridine. Based on the amino acid composition of the peptide-resin samples and high pressure liquid chromatographic analyses of the protected heptapeptide amide obtained from the ammonolytic cleavage of the peptide-resin samples, it was concluded that only dicyclohexylcarbodiimide plus 4-dimethylaminopyridine gave the desired near quantitative couplings in those cycles involving the sterically hindered amino acid residues. Observations were also made that 4-dimethylaminopyridine was a useful additive in a modified symmetrical anhydride method of coupling. In the synthesis of the model tetrapeptide Leu-Ala-Gly-Val on a Pam resin, the anhydride couplings were accelerated by DMAP and the product was equivalent in homogeneity to that obtained by the best previous methods. In addition, no racemization was detectable by a sensitive chromatographic method. There also was no detectable racemization found in a DCC-DMAP coupling of Boc-Ile-OH with H-Val-OCH2-resin. However, significant racemization was observed during the coupling of Boc-Phe-OH with H-Glu(OBzl)-OCH2-resin. DMAP is recommended as an additive for coupling hindered amino acids, particularly C alpha-substituted residues, where little or no racemization is expected.
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350
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Kraus W, Cramer R. Pentanortriterpenoide ausAzadirachta indica A. Juss (Meliaceae). ACTA ACUST UNITED AC 1981. [DOI: 10.1002/cber.19811140703] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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