8-bromo-cAMP → Camp

HRID 1723458

반응식

HRID 1723458 반응식
[CH2:1]1[O:22][P:20]([OH:23])(=[O:21])[O:19][C@H:3]2[C@@H:4]([OH:18])[C@H:5]([N:7]3[C:16](Br)=[N:15][C:9]4[C:10]([NH2:14])=[N:11][CH:12]=[N:13][C:8]3=4)[O:6][C@H:2]12.[Cl-].[Cl-].[Ca+2]>CN(C=O)C>[CH:12]1[N:11]=[C:10]([NH2:14])[C:9]2[N:15]=[CH:16][N:7]([C@@H:5]3[O:6][C@@H:2]4[CH2:1][O:22][P:20]([OH:23])([O:19][C@H:3]4[C@H:4]3[OH:18])=[O:21])[C:8]=2[N:13]=1

참가 물질

4

반응물 2

HCID 320148-bromo-cAMPHCID 5284359Calcium Chloride

생성물 1

HCID 6076Camp

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

A mixture of dry 8-bromo-cAMP (20 g, 49 mmol) and CaCl2 (20 g, 180 mmol, dried at 75° under vacuum overnight) in anhydrous DMF (800 mL, distilled over CaH2 under vacuum) was heated at 80°-85° C. under anhydrous conditions with stirring for 15 h. DMF was evaporated under reduced pressure at 50° C. and the residue was dissolved in cold 2N NaOH (20 mL). The aqueous solution was neutralized (to pH 7) with cold 2N HCl, filtered through a membrane filter and purified by preparative HPLC on a C-18 reverse phase column. Initial washing with 0.5% AcOH/H2O gave 8-hydroxy-cAMP and cAMP. Further elution with 15% MeOH/H2O gave pure title compound. Evaporation of the solvent gave while solid, which was collected, washed with cold water followed by EtOH and dried to furnish 14.0 g (79%) of 4, mp 232°-234° C.: IR (KBr): 655 (C-C1) cm-1 : UV: λmax (pH 1) 260 nm (ε 15,600): λmax (pH 7) 261 nm (ε 15,700): λmax (pH 11) 261 nm (ε 15,900): 1H NMR (Me2SO-d6): δ 4.13 (m, 2, C5'H2), 4.56-4.39 (m, 1, C4'H), 4.99-4.97 and 5.17-5.13 (m, 2, C2'H and C3'H), 5.85 (s, 1, C1H), 7.67 (br, s, 2, NH2) and 8.21 (s, 1, C2H). Anal. Calcd for C10H11C1N5O6P.H2O: C, 31.47: H, 3.43: N, 18.53: C1, 9.29. Found: C, 31.69: H, 3.19: N, 18.26: C 1, 9.52.

후처리

  1. temperaturewas heated at 80°-85° C. under anhydrous conditions
  2. customDMF was evaporated under reduced pressure at 50° C.
  3. dissolutionthe residue was dissolved in cold 2N NaOH (20 mL)
  4. filtrationfiltered through a membrane
  5. filtrationfilter
  6. custompurified by preparative HPLC on a C-18 reverse phase column
  7. washInitial washing with 0.5% AcOH/H2O

출처 및 근거

ORD 기록
ord-02aba5f4279442c8b1714e3b29253438
출처 데이터셋
uspto-grants-1989_08
특허 번호
US04861873

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