Trifluoromethanesulfonic acid → 17-Ethyl-1-hydroxy-14-(tert-butyldimethylsiloxy)-12-[2'-(4"-(2"'-phenyl-2"'-benzyloxyethyloxy)-3"-methoxycyclohexyl)-1'-methylvinyl]-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

HRID 1734377Notes

Reaction equation

HRID 1734377 reaction equation
[CH2:1]([CH:3]1[CH:29]=[C:28]([CH3:30])[CH2:27][CH:26]([CH3:31])[CH2:25][CH:24]([O:32][CH3:33])[CH:23]2[O:34][C:19]([OH:38])([CH:20]([CH3:37])[CH2:21][CH:22]2[O:35][CH3:36])[C:18](=[O:39])[C:17](=[O:40])[N:16]2[CH:11]([CH2:12][CH2:13][CH2:14][CH2:15]2)[C:10](=[O:41])[O:9][CH:8]([C:42]([CH3:62])=[CH:43][CH:44]2[CH2:49][CH2:48][CH:47]([O:50][CH2:51][CH:52]([C:54]3[CH:59]=[CH:58][CH:57]=[CH:56][CH:55]=3)[OH:53])[CH:46]([O:60][CH3:61])[CH2:45]2)[CH:7]([CH3:63])[CH:6]([O:64][Si:65]([C:68]([CH3:71])([CH3:70])[CH3:69])([CH3:67])[CH3:66])[CH2:5][C:4]1=[O:72])[CH3:2].OS(C(F)(F)F)(=O)=O.C(=O)(O)[O-].[Na+]>C1CCCCC1.ClCCl>[CH2:1]([CH:3]1[CH:29]=[C:28]([CH3:30])[CH2:27][CH:26]([CH3:31])[CH2:25][CH:24]([O:32][CH3:33])[CH:23]2[O:34][C:19]([OH:38])([CH:20]([CH3:37])[CH2:21][CH:22]2[O:35][CH3:36])[C:18](=[O:39])[C:17](=[O:40])[N:16]2[CH:11]([CH2:12][CH2:13][CH2:14][CH2:15]2)[C:10](=[O:41])[O:9][CH:8]([C:42]([CH3:62])=[CH:43][CH:44]2[CH2:49][CH2:48][CH:47]([O:50][CH2:51][CH:52]([C:54]3[CH:59]=[CH:58][CH:57]=[CH:56][CH:55]=3)[O:53][CH2:43][C:44]3[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=3)[CH:46]([O:60][CH3:61])[CH2:45]2)[CH:7]([CH3:63])[CH:6]([O:64][Si:65]([C:68]([CH3:69])([CH3:70])[CH3:71])([CH3:67])[CH3:66])[CH2:5][C:4]1=[O:72])[CH3:2]

Participants

6

Reactant 3

HCID 62406Trifluoromethanesulfonic acidHCID 516892Sodium BicarbonateHCID 5728056017-Ethyl-1-hydroxy-14-(tert-butyldimethylsiloxy)-12-[2'-(4"-(2"'-phenyl-2"'-hydroxyethyloxy)-3"-methoxycyclohexyl)-1'-methylvinyl]-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 13171945217-Ethyl-1-hydroxy-14-(tert-butyldimethylsiloxy)-12-[2'-(4"-(2"'-phenyl-2"'-benzyloxyethyloxy)-3"-methoxycyclohexyl)-1'-methylvinyl]-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-tetraoneYield 101.1%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8078CyclohexaneSolvent

Procedure

To a solution of 17-ethyl-1-hydroxy-14-(tert-butyldimethylsiloxy)-12-[2'-(4"-(2'"-phenyl-2'"-hydroxyethyloxy)-3"-methoxycyclohexyl)-1'-methylvinyl]-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 (40 mg) in cyclohexane (0.8 ml) and dichloromethane (0.4 ml) was added 2,2,2-benzyltrichloroacetimidate at 0° C. followed by triflic acid. The reaction was allowed to warm to room temperature and stir for 1.5 hours after which time it was poured into saturated aqueous sodium bicarbonate solution and extracted into ethyl acetate. The organic extracts were dried (MgSO4) and concentrated and the crude material was purified by column chromatography on silica gel eluting with 65% hexane:35% ethyl acetate to give the desired product (22 mg).

Workup

  1. extractionextracted into ethyl acetate
  2. dry with materialThe organic extracts were dried (MgSO4)
  3. concentrationconcentrated
  4. customthe crude material was purified by column chromatography on silica gel eluting with 65% hexane

Sources & evidence

ORD record
ord-31b3e92f999d48a28aca1f37ad073481
Source dataset
uspto-grants-1996_07
Patent number
US05532248

Reaction notes

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