1,2-Diiodoethane → 17-Ethyl-1,2,14-trihydroxy-12-[2'-(4"-(naphth-2-yl)-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-3,10,16-trione

HRID 1939076Notes

Reaction equation

HRID 1939076 reaction equation
ICCI.[Sm].C(=O)=O.CC(C)=O.[CH2:13]([CH:15]1[CH:41]=[C:40]([CH3:42])[CH2:39][CH:38]([CH3:43])[CH2:37][CH:36]([O:44][CH3:45])[CH:35]2[O:46][C:31]([OH:50])([CH:32]([CH3:49])[CH2:33][CH:34]2[O:47][CH3:48])[C:30](=[O:51])[C:29](=[O:52])[N:28]2[CH:23]([CH2:24][CH2:25][CH2:26][CH2:27]2)[C:22](=[O:53])[O:21][CH:20]([C:54]([CH3:74])=[CH:55][CH:56]2[CH2:61][CH2:60][CH:59]([C:62]3[CH:71]=[CH:70][C:69]4[C:64](=[CH:65][CH:66]=[CH:67][CH:68]=4)[CH:63]=3)[CH:58]([O:72][CH3:73])[CH2:57]2)[CH:19]([CH3:75])[CH:18]([OH:76])[CH2:17][C:16]1=[O:77])[CH3:14]>C1COCC1.C1COCC1.CO>[CH2:13]([CH:15]1[CH:41]=[C:40]([CH3:42])[CH2:39][CH:38]([CH3:43])[CH2:37][CH:36]([O:44][CH3:45])[CH:35]2[O:46][C:31]([OH:50])([CH:32]([CH3:49])[CH2:33][CH:34]2[O:47][CH3:48])[CH:30]([OH:51])[C:29](=[O:52])[N:28]2[CH:23]([CH2:24][CH2:25][CH2:26][CH2:27]2)[C:22](=[O:53])[O:21][CH:20]([C:54]([CH3:74])=[CH:55][CH:56]2[CH2:61][CH2:60][CH:59]([C:62]3[CH:71]=[CH:70][C:69]4[C:64](=[CH:65][CH:66]=[CH:67][CH:68]=4)[CH:63]=3)[CH:58]([O:72][CH3:73])[CH2:57]2)[CH:19]([CH3:75])[CH:18]([OH:76])[CH2:17][C:16]1=[O:77])[CH3:14]

Participants

7

Reactant 4

HCID 122241,2-DiiodoethaneHCID 23951SamariumHCID 18522661Acetone cardiceHCID 5718413317-Ethyl-1,14-dihydroxy-12-[2'-(4"-(naphth-2-yl)-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 5712063717-Ethyl-1,2,14-trihydroxy-12-[2'-(4"-(naphth-2-yl)-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-3,10,16-trioneYield 22.3%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 21899815MeOH tetrahydrofuranSolvent

Conditions

Temperature
-78 °C

Procedure

A solution of 1,2-diiodoethane (42 mg, 0.15 mmol) in dry THF (1 mL) was added dropwise to a stirred mixture of samarium metal (46.5 mg, 0.31 mmol) in dry THF (1 mL) and stirred for 1.5 hours. The reaction mixture was then cooled to -78° C. (dry ice/acetone) and treated with a solution of 17-ethyl-1,14-dihydroxy-12-[2'-(4"-(naphth-2-yl)-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 (100 mg, 0.109 mmol) in 1:1 THF/CH3OH. The mixture was maintained at -78° C. for 15 minutes then allowed to warm to room temperature. The reaction was quenched with cold saturated aqueous K2CO3 and quickly extracted with CH2Cl2. The extracts were combined, dried with Na2SO4, filtered and concentrated in vacuo. Purified by preparative TLC on silica gel (eluted with 7% CH3OH in CH2 Cl2) to give 22 mg of 17-ethyl-1,2,14-trihydroxy-12-[2'-(4"-(naphth-2-yl)-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-3,10,16-trione (1H NMR and mass spectral analysis are consistent with the desired structure).

Workup

  1. temperatureto warm to room temperature
  2. customThe reaction was quenched with cold saturated aqueous K2CO3
  3. extractionquickly extracted with CH2Cl2
  4. dry with materialdried with Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customPurified by preparative TLC on silica gel (eluted with 7% CH3OH in CH2 Cl2)

Sources & evidence

ORD record
ord-15957eb717e445a2a44b2271f06d27e1
Source dataset
uspto-grants-1997_12
Patent number
US05693648

Reaction notes

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