Water → HCID 57176789, compound

HRID 248259Notes

Reaction equation

HRID 248259 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]([CH3:64])=[CH:43][CH:44]2[CH2:49][CH2:48][CH:47](O)[CH:46]([O:51]S(C3C=CC=CC=3[N+]([O-])=O)(=O)=O)[CH2:45]2)[CH:7]([CH3:65])[CH:6]([O:66][Si](C(C)(C)C)(C)C)[CH2:5][C:4]1=[O:74])[CH3:2].[N-:75]=[N+:76]=[N-:77].[Na+].O>CN(C=O)C>[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]([CH3:64])=[CH:43][CH:44]2[CH2:49][CH2:48][CH:47]([N:75]=[N+:76]=[N-:77])[CH:46]([OH:51])[CH2:45]2)[CH:7]([CH3:65])[CH:6]([OH:66])[CH2:5][C:4]1=[O:74])[CH3:2]

Participants

5

Reactant 3

HCID 962WaterHCID 33557Sodium AzideHCID 57180998HCID 57180998, compound2×

Product 1

HCID 57176789HCID 57176789, compoundYield 40.9%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 17-ethyl-1,14-dihydroxy-12-[2'-[4"-(2"'-nitrobenzenesulfonyloxy)-3"-hydroxycyclohexyl]-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 (105 mg, Example 64, compound A) in dry DMF (1 ml) with sodium azide (22 mg) was heated to 50° C. for 3 h. The reaction mixture was cooled, poured into water and extracted with ethyl acetate. The combined organic layers were washed with brine, dried over sodium sulfate and purified by column chromatography on silica gel (2:1 ethyl acetate/hexane) to gave 32 mg of 17-ethyl-1,14-dihydroxy-12-[2'-(4"-azido-3"-hydroxycyclohexyl)-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. This material (30 mg) and triphenylphosphine (15 mg) in 1 ml of wet benzene was refluxed for 6.5 h. The solvent was removed in vacuo and the residue was purified on silica gel (eluted first with 5% MeOH/CH2Cl2, then 1% NH4OH in 5% MeOH/CH2Cl2) to give 12 mg of the title compound.

Workup

  1. temperatureThe reaction mixture was cooled
  2. extractionextracted with ethyl acetate
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over sodium sulfate
  5. custompurified by column chromatography on silica gel (2:1 ethyl acetate/hexane)

Sources & evidence

ORD record
ord-328fd6cd02974a05864b053f2bf6500c
Source dataset
uspto-grants-1993_05
Patent number
US05208228

Reaction notes

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