Knowledge

Fluorenylmethyloxycarbonyl protecting group

Source πŸ“

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in SPPS is very widespread for Fmoc/tBu approach, because its removal with piperidine solution does not disturb the acid-labile linker between the peptide and the resin. A typical SPPS Fmoc deprotection is performed with a solution of 20%
139:
The Fmoc group is rapidly removed by base. Piperidine is usually preferred for Fmoc group removal as it forms a stable adduct with the dibenzofulvene byproduct, preventing it from reacting with the substrate.
91: 372:
Yamada, Kazuhiko; Hashizume, Daisuke; Shimizu, Tadashi; Ohki, Shinobu; Yokoyama, Shigeyuki (2008). "A solid-state 17O NMR, X-ray, and quantum chemical study of N-Ξ±-Fmoc-protected amino acids".
105: 401:"Introduction of 9-fluorenylmethyloxycarbonyl, trichloroethoxycarbonyl, and benzyloxycarbonyl amine protecting groups into O-unprotected hydroxyamino acids using succinimidyl carbonates" 354:
in DMF. This method avoids the use of strictly controlled piperidine. No side product was observed for a peptide with 9 residues synthesized with this method.
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Because the fluorenyl group is highly fluorescent, certain UV-inactive compounds may be reacted to give the Fmoc derivatives, suitable for analysis by
83: 127:. Analytical uses of Fmoc-Cl that do not use chromatography may be limited by the requirement that excess Fmoc-Cl be removed before an analysis of 482: 75: 347: 581: 528: 599:"Piperazine and DBU: a safer alternative for rapid and efficient Fmoc deprotection in solid phase peptide synthesis" 724: 405: 94:(Fmoc-OSu), which may itself be obtained by the reaction of Fmoc-Cl with the dicyclohexylammonium salt of 729: 434:
Carpino, Louis A.; Han, Grace Y. (1972). "9-Fluorenylmethoxycarbonyl amino-protecting group".
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20% piperidine in DMF (Fmoc group has an approximate half life of 6 seconds in this solution)
158: 646:"Incorporation of Fmoc-Dab(Mtt)-OH during solid-phase peptide synthesis: a word of caution" 610: 95: 8: 614: 469:, Methods in Molecular Biology, vol. 35, Totowa, NJ: Humana Press, pp. 17–27, 681: 113: 520: 685: 673: 665: 626: 577: 534: 524: 488: 478: 43: 657: 618: 569: 551:
J. Jones, Amino Acid and Peptide Synthesis, 2nd edn., Oxford University Press, 2002
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Wellings, Donald A.; Atherton, Eric (1997). "[4] Standard Fmoc protocols".
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Ralhan, Krittika; KrishnaKumar, V. Guru; Gupta, Sharad (8 December 2015).
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Fields, Gregg B. (1995), Pennington, Michael W.; Dunn, Ben M. (eds.),
645: 598: 63: 419: 400: 74:, where the Fmoc group can be introduced by reacting the amine with 90:
The other common method for introducing the Fmoc group is through
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The use of Fmoc as a temporary protecting group for amine at the
117: 49: 703: 71: 371: 515:. Methods in Enzymology. Vol. 289. pp. 44–67. 19: 644:
Lam, Pak-Lun; Wu, Yue; Wong, Ka-Leung (30 March 2022).
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Common deprotection cocktails for Fmoc during SPPS:
716: 563: 510: 566:Greene's Protective Groups in Organic Synthesis 134: 57: 53:Mechanism of Fmoc protection of amine group 433: 398: 643: 418: 28:fluorenylmethoxycarbonyl protecting group 120:is also a method to install Fmoc group. 48: 18: 92:9-fluorenylmethylsuccinimidyl carbonate 717: 463:"Methods for Removing the Finoc Group" 460: 108:(itself made by reacting Fmoc-Cl with 564:Wuts, P. G. M.; Greene, T.W. (2006). 650:Organic & Biomolecular Chemistry 559: 557: 76:fluorenylmethyloxycarbonyl chloride 13: 106:9-fluorenylmethyloxycarbonyl azide 14: 741: 696: 554: 454: 702: 436:The Journal of Organic Chemistry 143: 82: 637: 590: 545: 504: 427: 392: 386:10.1016/j.molstruc.2007.11.059 374:Journal of Molecular Structure 365: 1: 521:10.1016/s0076-6879(97)89043-x 513:Solid-Phase Peptide Synthesis 406:Canadian Journal of Chemistry 358: 16:Base-labile protecting group 7: 467:Peptide Synthesis Protocols 135:Cleavage & Deprotection 10: 746: 58:Protection & Formation 475:10.1385/0-89603-273-6:17 66:is frequently used as a 609:(126): 104417–104425. 54: 23: 159:N,N-dimethylformamide 52: 22: 725:Biochemistry methods 711:at Wikimedia Commons 266:β†’ HOC(O)NHR + (CH 615:2015RSCAd...5j4417R 448:10.1021/jo00795a005 399:Paquet, A. (1982). 125:reversed phase HPLC 99:-hydroxysuccinimide 662:10.1039/D2OB00070A 623:10.1039/C5RA23441G 574:10.1002/0470053488 279:HOC(O)NHR β†’ CO 232:βˆ’OC(O)NHR] β†’ C 114:sodium bicarbonate 55: 24: 730:Protecting groups 707:Media related to 656:(13): 2601–2604. 484:978-1-59259-522-8 442:(22): 3404–3409. 178:βˆ’OC(O)NHR + (CH 78:(Fmoc-Cl), e.g.: 44:organic synthesis 737: 706: 690: 689: 641: 635: 634: 594: 588: 587: 568:. NY: J. Wiley. 561: 552: 549: 543: 542: 508: 502: 501: 500: 499: 458: 452: 451: 431: 425: 424: 422: 396: 390: 389: 380:(1–3): 187–196. 369: 331: 287: 275: 265: 264: 261: 245: 216: 202: 201: 198: 86: 68:protecting group 40:protecting group 745: 744: 740: 739: 738: 736: 735: 734: 715: 714: 699: 694: 693: 642: 638: 595: 591: 584: 562: 555: 550: 546: 531: 509: 505: 497: 495: 485: 459: 455: 432: 428: 420:10.1139/v82-146 397: 393: 370: 366: 361: 330: 326: 322: 318: 314: 310: 306: 302: 298: 294: 290: 286: 282: 278: 273: 269: 262: 259: 258: 256: 252: 249:OC(O)NHR + (CH 248: 243: 239: 235: 231: 227: 223: 219: 214: 210: 206: 199: 196: 195: 193: 189: 185: 181: 177: 173: 169: 165: 146: 137: 60: 17: 12: 11: 5: 743: 733: 732: 727: 713: 712: 698: 697:External links 695: 692: 691: 636: 589: 582: 553: 544: 529: 503: 483: 453: 426: 413:(8): 976–980. 391: 363: 362: 360: 357: 356: 355: 340: 333: 332: 328: 324: 320: 316: 312: 308: 304: 300: 296: 292: 288: 284: 280: 276: 271: 267: 254: 250: 246: 241: 237: 233: 229: 225: 221: 217: 212: 208: 204: 191: 187: 183: 179: 175: 171: 167: 145: 142: 136: 133: 104:Reacting with 88: 87: 59: 56: 15: 9: 6: 4: 3: 2: 742: 731: 728: 726: 723: 722: 720: 710: 705: 701: 700: 687: 683: 679: 675: 671: 667: 663: 659: 655: 651: 647: 640: 632: 628: 624: 620: 616: 612: 608: 604: 600: 593: 585: 583:9780470053485 579: 575: 571: 567: 560: 558: 548: 540: 536: 532: 530:9780121821906 526: 522: 518: 514: 507: 494: 490: 486: 480: 476: 472: 468: 464: 457: 449: 445: 441: 437: 430: 421: 416: 412: 408: 407: 402: 395: 387: 383: 379: 375: 368: 364: 353: 349: 345: 341: 338: 337: 336: 289: 277: 247: 218: 164: 163: 162: 160: 156: 151: 144:Roles in SPPS 141: 132: 130: 126: 121: 119: 115: 111: 107: 102: 100: 98: 93: 85: 81: 80: 79: 77: 73: 69: 65: 51: 47: 45: 41: 37: 33: 29: 21: 653: 649: 639: 606: 603:RSC Advances 602: 592: 565: 547: 512: 506: 496:, retrieved 466: 456: 439: 435: 429: 410: 404: 394: 377: 373: 367: 334: 147: 138: 129:fluorescence 122: 116:and aqueous 110:sodium azide 103: 96: 89: 61: 31: 27: 25: 352:formic acid 244:+ OC(O)NHR 186:NH β†’ (CH 719:Categories 498:2021-10-15 359:References 344:piperazine 311:NH β†’ C 215:βˆ’OC(O)NHR] 203:+ [C 155:piperidine 150:N-terminus 686:247175352 670:1477-0539 631:2046-2069 64:carbamate 678:35258068 42:used in 38:-labile 611:Bibcode 539:9353717 493:7894598 350:and 1% 303:+ (CH 161:(DMF). 118:dioxane 34:) is a 684:  676:  668:  629:  580:  537:  527:  491:  481:  220:[C 72:amines 682:S2CID 346:, 1% 283:+ RNH 112:) in 62:Fmoc 709:Fmoc 674:PMID 666:ISSN 627:ISSN 578:ISBN 535:PMID 525:ISBN 489:PMID 479:ISBN 323:N(CH 70:for 36:base 32:Fmoc 26:The 658:doi 619:doi 570:doi 517:doi 471:doi 444:doi 415:doi 382:doi 378:888 348:DBU 342:5% 319:βˆ’CH 299:=CH 240:=CH 228:βˆ’CH 211:βˆ’CH 174:βˆ’CH 157:in 721:: 680:. 672:. 664:. 654:20 652:. 648:. 625:. 617:. 605:. 601:. 576:. 556:^ 533:. 523:. 487:, 477:, 465:, 440:37 438:. 411:60 409:. 403:. 376:. 313:13 293:13 274:NH 257:NH 234:13 222:13 205:13 194:NH 168:13 131:. 101:. 46:. 688:. 660:: 633:. 621:: 613:: 607:5 586:. 572:: 541:. 519:: 473:: 450:. 446:: 423:. 417:: 388:. 384:: 329:5 327:) 325:2 321:2 317:9 315:H 309:5 307:) 305:2 301:2 297:8 295:H 291:C 285:2 281:2 272:5 270:) 268:2 263:2 260:+ 255:5 253:) 251:2 242:2 238:8 236:H 230:2 226:8 224:H 213:2 209:8 207:H 200:2 197:+ 192:5 190:) 188:2 184:5 182:) 180:2 176:2 172:9 170:H 166:C 97:N 30:(

Index


base
protecting group
organic synthesis

carbamate
protecting group
amines
fluorenylmethyloxycarbonyl chloride
Scheme showing addition of an Fmoc group to an amino acid
9-fluorenylmethylsuccinimidyl carbonate
N-hydroxysuccinimide
9-fluorenylmethyloxycarbonyl azide
sodium azide
sodium bicarbonate
dioxane
reversed phase HPLC
fluorescence
N-terminus
piperidine
N,N-dimethylformamide
piperazine
DBU
formic acid
doi
10.1016/j.molstruc.2007.11.059
"Introduction of 9-fluorenylmethyloxycarbonyl, trichloroethoxycarbonyl, and benzyloxycarbonyl amine protecting groups into O-unprotected hydroxyamino acids using succinimidyl carbonates"
Canadian Journal of Chemistry
doi
10.1139/v82-146

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