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Volumn , Issue 11, 2008, Pages 1651-1656

A novel solid-phase synthetic method for 1,4-benzodiazepine-2,5-dione derivatives

Author keywords

Anthranilic acid; Benzodiazepine; Combinatorial chemistry; Cyclative cleavage; Solid phase synthesis

Indexed keywords

1,4 BENZODIAZEPINE 2,5 DIONE DERIVATIVE; AMINO ACID; ANTHRANILIC ACID DERIVATIVE; BENZODIAZEPINE DERIVATIVE; G 7446; G 7570; RESIN; VAD 463;

EID: 48449096719     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2008-1078484     Document Type: Article
Times cited : (10)

References (81)
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    • Although several other conditions for the resin 5a and N-Fmoc-protected phenylalanine (R2, Bn, 3 equiv) were examined varying coupling agent [DCC, DIC, EDC, O-benzotriazole-N,N, N′,N′-tetramethyluronium hexafluorophosphate (HBTU, 2-(7-aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU, O-(benzotriazol-1-yl)-N,N,N′, N′-tetramethyluronium tetrafluoroborate (TBTU, BOP, PyBOP, 2-chloro-1,3-dimethylimidazolidium hexafluorophosphate (CIP, 1,1′-carbonyldiimidazole (CDI, N,N′-disuccinimidyl carbonate (DSC, or diphenylphosphoryl azide (DPPA, additive [none, N-hydroxybenzotriazole (HOBt, 1-hydroxy-7-azabenzotriazole (HOAt, or N-hydroxysuccinimide (HOSu, base [none, pyridine, Et3N, diisopropylethylamine (DIEA, or NMM, solvent [CH2Cl2, THF, DMF, or N,N-dimethyl-acetamide DMA, at r.t. or elevated te
    • 2, THF, DMF, or N,N-dimethyl-acetamide (DMA)] at r.t. or elevated temperatures, they did not bring any significant change on the resin 5a when judged on the basis of on-bead ATR-FTIR spectroscopy.
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    • Representative Procedures for Preparation of Compounds 3 Preparation of (S)-2-{Benzyl[2-(Fmoc-amino)-3-phenylpropionyl]amino} benzoate Resin (6a; R4, H, R1, Bn, R2, Bn, To a mixture of the resin 5a2a,b (R4, H, R1, Bn, 100 mg, theoretically 0.077 mmol) and Fmoc-phenylalanine (93 mg, 0.23 mmol) in CH2Cl2 (2 mL) at r.t. were added pyridine (37 mg, 0.46 mmol) and phosphorous oxychloride (37 mg, 0.23 mmol, The mixture was stirred at r.t. for 10 h and the resin was filtered, washed several times with CH 2Cl2, DMF, MeOH, H2O, and MeOH, and dried in a vacuum oven to give 6a (124 mg, On-bead ATR-FTIR: 3418 (NH, 3028, 2921, 1722 (OC=O, NH-Fmoc, overlapped, 1664 (NC=O, 1601, 1512, 1492, 1451, 1241, 1076, 1028, 824, 757, 738, 697 cm-1. Preparation of (S)-1,3-Dibenzyl-1,4-benzodiazepine-2,5-dione 3a; R4, H, R 1
    • 4 = 7-BzNH)


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.