Ethyl Acetate → 17-Ethyl-20-fluoro-1,14-dihydroxy-12-[2'-(4"-hydroxy-3"-methoxycyclohexyl)-1'-methylvinyl]-23,25-dimethoxy-13, 19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo-[22.3.1.04,9]octacos-18-ene2,3,10,16-tetraone

HRID 1078080Notes

Reaction equation

HRID 1078080 reaction equation
[CH2:1]([CH:3]1[CH:29]=[C:28]([CH3:30])[CH:27](O)[CH:26]([CH3:32])[CH2:25][CH:24]([O:33][CH3:34])[CH:23]2[O:35][C:19]([OH:39])([CH:20]([CH3:38])[CH2:21][CH:22]2[O:36][CH3:37])[C:18](=[O:40])[C:17](=[O:41])[N:16]2[CH:11]([CH2:12][CH2:13][CH2:14][CH2:15]2)[C:10](=[O:42])[O:9][CH:8]([C:43]([CH3:61])=[CH:44][CH:45]2[CH2:50][CH2:49][CH:48]([O:51][Si](C(C)(C)C)(C)C)[CH:47]([O:59][CH3:60])[CH2:46]2)[CH:7]([CH3:62])[CH:6]([O:63][Si](C(C)(C)C)(C)C)[CH2:5][C:4]1=[O:71])[CH3:2].C(N(S(F)(F)[F:78])CC)C.C(=O)(O)[O-].[Na+].C(OCC)(=O)C>C(Cl)Cl>[CH2:1]([CH:3]1[CH:29]=[C:28]([CH3:30])[CH:27]([F:78])[CH:26]([CH3:32])[CH2:25][CH:24]([O:33][CH3:34])[CH:23]2[O:35][C:19]([OH:39])([CH:20]([CH3:38])[CH2:21][CH:22]2[O:36][CH3:37])[C:18](=[O:40])[C:17](=[O:41])[N:16]2[CH:11]([CH2:12][CH2:13][CH2:14][CH2:15]2)[C:10](=[O:42])[O:9][CH:8]([C:43]([CH3:61])=[CH:44][CH:45]2[CH2:50][CH2:49][CH:48]([OH:51])[CH:47]([O:59][CH3:60])[CH2:46]2)[CH:7]([CH3:62])[CH:6]([OH:63])[CH2:5][C:4]1=[O:71])[CH3:2]

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 123472(Diethylamino)sulfur trifluorideHCID 516892Sodium BicarbonateHCID 5701488917-Ethyl-1,20-di-hydroxy-12-[2'-(4"-t-butyldimethylsilyloxy-3"-methoxycyclohexyl)-1'-methylvinyl]-14-t-butyldimethylsilyloxy-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.04,9]octacos-18-ene-2,3,10,16-tetraone

Product 1

HCID 5702442717-Ethyl-20-fluoro-1,14-dihydroxy-12-[2'-(4"-hydroxy-3"-methoxycyclohexyl)-1'-methylvinyl]-23,25-dimethoxy-13, 19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo-[22.3.1.04,9]octacos-18-ene2,3,10,16-tetraone

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of 17-Ethyl-1,20-di-hydroxy-12-[2'-(4"-t-butyldimethylsilyloxy-3"-methoxycyclohexyl)-1'-methylvinyl]-14-t-butyldimethylsilyloxy-23,25-dimethoxy-13,19,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.04,9 ]octacos-18-ene-2,3,10,16-tetraone in methylene chloride cooled to -78° C. was added diethylaminosulfur trifluoride. After 3 min., saturated sodium bicarbonate solution was added followed by ethyl acetate and the reaction mixture was allowed to warm to room temperature. The reaction mixture was extracted with ethyl acetate, the organic extracts were dried over magnesium sulfate, filtered and evaporated in vacuo. The product was purified by chromatography (silica, ethyl acetate:hexanes 1:2+1% methanol. To a solution of this material (10 mg) in THF (0.6 ml) in a polypropylene vial was added 40 μL of HF-pyridine solution in THF. After stirring for 28 hours at rt, the mixture was added to a saturated solution of sodium bicarbonate. This mixture was extracted with ethyl acetate and the organic extracts were dried over magnesium sulfate, filtered and evaporated in vacuo. The product was purified by chromatography (silica, ethyl acetate:hexanes 2:1+1% methanol) to give the title compound. Mass Spectrum (FAB): 832 (M+Na)

Workup

  1. extractionThe reaction mixture was extracted with ethyl acetate
  2. dry with materialthe organic extracts were dried over magnesium sulfate
  3. filtrationfiltered
  4. customevaporated in vacuo
  5. customThe product was purified by chromatography (silica, ethyl acetate:hexanes 1:2+1% methanol
  6. additionTo a solution of this material (10 mg) in THF (0.6 ml) in a polypropylene vial was added 40 μL of HF-pyridine solution in THF
  7. additionthe mixture was added to a saturated solution of sodium bicarbonate
  8. extractionThis mixture was extracted with ethyl acetate
  9. dry with materialthe organic extracts were dried over magnesium sulfate
  10. filtrationfiltered
  11. customevaporated in vacuo
  12. customThe product was purified by chromatography (silica, ethyl acetate:hexanes 2:1+1% methanol)

Sources & evidence

ORD record
ord-a0a4b9ca461947a485b6588a19aa2bab
Source dataset
uspto-grants-1996_08
Patent number
US05545734

Reaction notes

Loading…