p-Toluenesulfonic acid → HCID 57236064, compound

HRID 1656286Notes

Reaction equation

HRID 1656286 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]([CH3:73])=[CH:43][CH:44]2[CH2:49][CH2:48][CH:47]([O:50][C:51]3[CH:52]=[C:53]4[C:57](=[CH:58][CH:59]=3)[N:56]([CH2:60][CH2:61][CH2:62][O:63][Si](C(C)(C)C)(C)C)[CH:55]=[CH:54]4)[CH:46]([O:71][CH3:72])[CH2:45]2)[CH:7]([CH3:74])[CH:6]([OH:75])[CH2:5][C:4]1=[O:76])[CH3:2].C1(C)C=CC(S(O)(=O)=O)=CC=1>C(Cl)Cl.CO>[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]([CH3:73])=[CH:43][CH:44]2[CH2:49][CH2:48][CH:47]([O:50][C:51]3[CH:52]=[C:53]4[C:57](=[CH:58][CH:59]=3)[N:56]([CH2:60][CH2:61][CH2:62][OH:63])[CH:55]=[CH:54]4)[CH:46]([O:71][CH3:72])[CH2:45]2)[CH:7]([CH3:74])[CH:6]([OH:75])[CH2:5][C:4]1=[O:76])[CH3:2]

Participants

5

Reactant 2

HCID 6101p-Toluenesulfonic acidHCID 57133775HCID 57133775, compound

Product 1

HCID 57236064HCID 57236064, compoundYield 62.9%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of 17-ethyl-1,14-dihydroxy-12-[2'-(4"-(1-(3-t-butyldimethylsilyloxy-propyl)indol-5-yl)oxy-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 (144 mg) in CH2Cl2 (4 mL.) at rt was added a solution of p-toluene sulfonic acid (20 mg.) in CH3OH (4 mL.). The reaction mixture was stirred for 3 hr., quenched with saturated NaHCO3, then extracted with CH2Cl2. The extracts were combined, dried over Na2SO4, filtered and concentrated in vacuo. The product was purified by preparative TLC on silica gel (2:1, hexane/acetone) to give 81 mg of the title compound. Partial 1H NMR (CDCl3, 200 MHz) d: 7.22 (d, J=9 Hz, 1H); 7.18 (d, J=3 Hz, 1H); 7.07 (d, J=3 Hz, 1H); 6.89 (dd, J=3 Hz and J=9 Hz, 1H); 6.34 (d, J=3 Hz, 1H); 4.20 (t, J=6.5 Hz, 2H); 2.00 (m, 2H).

Workup

  1. custom, quenched with saturated NaHCO3
  2. extractionextracted with CH2Cl2
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe product was purified by preparative TLC on silica gel (2:1, hexane/acetone)

Sources & evidence

ORD record
ord-1c6c7b050fc24229a944d64eee83886d
Source dataset
uspto-grants-1993_10
Patent number
US05252732

Reaction notes

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