Methyl 4-[5-(2-cyclopentylacetamido)-1-ethylindol-3-ylmethyl]-3-methoxybenzoate → (+/-)Methyl 4-[5-(2-cyclopentylacetamido)-1-ethyl-2,3-dihydroindol-3-ylmethyl]-3-methoxybenzoate

HRID 1080785노트

반응식

HRID 1080785 반응식
[CH:1]1([CH2:6][C:7]([NH:9][C:10]2[CH:11]=[C:12]3[C:16](=[CH:17][CH:18]=2)[N:15]([CH2:19][CH3:20])[CH:14]=[C:13]3[CH2:21][C:22]2[CH:31]=[CH:30][C:25]([C:26]([O:28][CH3:29])=[O:27])=[CH:24][C:23]=2[O:32][CH3:33])=[O:8])[CH2:5][CH2:4][CH2:3][CH2:2]1>[Pd].C(O)=O>[CH:1]1([CH2:6][C:7]([NH:9][C:10]2[CH:11]=[C:12]3[C:16](=[CH:17][CH:18]=2)[N:15]([CH2:19][CH3:20])[CH2:14][CH:13]3[CH2:21][C:22]2[CH:31]=[CH:30][C:25]([C:26]([O:28][CH3:29])=[O:27])=[CH:24][C:23]=2[O:32][CH3:33])=[O:8])[CH2:2][CH2:3][CH2:4][CH2:5]1

참가 물질

4

반응물 1

HCID 14626833Methyl 4-[5-(2-cyclopentylacetamido)-1-ethylindol-3-ylmethyl]-3-methoxybenzoate

생성물 1

HCID 14626834(+/-)Methyl 4-[5-(2-cyclopentylacetamido)-1-ethyl-2,3-dihydroindol-3-ylmethyl]-3-methoxybenzoate수율 80%

시약·촉매·용매 2

HCID 23938Palladium촉매HCID 284Formic Acid용매

반응 조건

온도
80 °C

실험 절차

Palladium-on-carbon (10% w/w, 0.5 g.) was added to a mixture of methyl 4-[5-(2-cyclopentylacetamido)-1-ethylindol-3-ylmethyl]-3-methoxybenzoate (0.5 g., prepared as described in Example 80), and formic acid (99%, 20 ml.), under an atmosphere of nitrogen. The mixture was vigorously stirred and heated at 80° C. for one hour. The cooled mixture was filtered through a pad of diatomaceous earth, the filter cake washed with methanol, and the filtrate evaporated. The resulting oil was dissolved in ethyl acetate (30 ml.) washed with water, brine, then dried (MgSO4) and evaporated. The product was purified by flash chromatography on silica gel (4 cm. diameter column), eluting with 2:3 v/v ethyl acetate:hexane, to give the title compound (0.37 g., 80%) as a foam; NMR (250 MHz, DMSO-d6): 1.04(t,3H, --CH2CH3); 1.15(m,2H, cyclopentyl ring); 1.4-1.8(m,6H, cyclopentyl ring); 2.2(m,3H); 2.7(dd,1H); 2.85-3.2(m,5H); 3.45(m,1H); 3.86(s,3H, OCH3); 3.87(s,3H, OCH3); 6.43(d,1H); 7.20 (m,2H); 7.30(d,1H); 7.50(m,2H); 9.47(s,1H, NH).

후처리

  1. filtrationThe cooled mixture was filtered through a pad of diatomaceous earth
  2. washthe filter cake washed with methanol
  3. customthe filtrate evaporated
  4. dissolutionThe resulting oil was dissolved in ethyl acetate (30 ml.)
  5. washwashed with water, brine
  6. dry with materialdried (MgSO4)
  7. customevaporated
  8. customThe product was purified by flash chromatography on silica gel (4 cm. diameter column)
  9. washeluting with 2:3 v/v ethyl acetate

출처 및 근거

ORD 기록
ord-8b04306eb7004b63a0ea04ba2d0fda93
출처 데이터셋
uspto-grants-1996_12
특허 번호
US05583152

반응 노트

불러오는 중…