17-Ethyl-1,14-dihydroxy-12-[1-(4-hydroxy-3-methoxycyclohexyl)prop-1-en-2-yl]-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-tetrone → HCID 57054354, compound

HRID 865594Notes

Reaction equation

HRID 865594 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]([CH3:53])=[CH:43][CH:44]2[CH2:49][CH2:48][CH:47]([OH:50])[CH:46]([O:51][CH3:52])[CH2:45]2)[CH:7]([CH3:54])[CH:6]([OH:55])[CH2:5][C:4]1=[O:56])[CH3:2].C12(CS(O)(=O)=O)C(C)(C)C(CC1)CC2=O.ClC(Cl)(Cl)C(=N)O[CH2:76][CH:77]=[CH:78][C:79]1[CH:84]=[CH:83][C:82]([O:85][Si:86]([C:89]([CH3:92])([CH3:91])[CH3:90])([CH3:88])[CH3:87])=[CH:81][CH:80]=1>>[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]([CH3:53])=[CH:43][CH:44]2[CH2:49][CH2:48][CH:47]([O:50][CH2:76][CH:77]=[CH:78][C:79]3[CH:84]=[CH:83][C:82]([O:85][Si:86]([C:89]([CH3:90])([CH3:92])[CH3:91])([CH3:88])[CH3:87])=[CH:81][CH:80]=3)[CH:46]([O:51][CH3:52])[CH2:45]2)[CH:7]([CH3:54])[CH:6]([OH:55])[CH2:5][C:4]1=[O:56])[CH3:2]

Participants

4

Reactant 3

HCID 224117-Ethyl-1,14-dihydroxy-12-[1-(4-hydroxy-3-methoxycyclohexyl)prop-1-en-2-yl]-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-tetroneHCID 18462Bicyclo[2.2.1]heptane-1-methanesulfonic acid, 7,7-dimethyl-2-oxo-, (1S)-HCID 53995021HCID 53995021, compound

Product 1

HCID 57054354HCID 57054354, compound

Procedure

To a solution of 17-ethyl-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-ene-2,3,10,16-tetraone (700 mg in 12 ml methylene chloride)4-t-butyldimethylsiloxycinnamyl trichloroacetimidate (550 μl neat) was added and the reagents allowed to mix for 5 minutes. Camphorsulfonic acid (35 mg) was added and the mixture stirred at room temperature. After 5 hours the reaction was quenched by the addition of saturated sodium bicarbonate and extracted with ethyl acetate (3×15 ml). The combined organics were washed with brine and dried over magnesium sulfate. Purification oof the concentrate by flash chromatography on silica gel (ethyl acetate:hexane (1:2)+1% methanol) gave the title compound (190 mg).

Workup

  1. additionto mix for 5 minutes
  2. customAfter 5 hours the reaction was quenched by the addition of saturated sodium bicarbonate
  3. extractionextracted with ethyl acetate (3×15 ml)
  4. washThe combined organics were washed with brine
  5. dry with materialdried over magnesium sulfate
  6. customPurification oof the
  7. concentrationconcentrate by flash chromatography on silica gel (ethyl acetate:hexane (1:2)+1% methanol)

Sources & evidence

ORD record
ord-e426adf15be04b10a67fdfe55e69c278
Source dataset
uspto-grants-1996_10
Patent number
US05565560

Reaction notes

Loading…