Sodium Hydroxide → (2S)-2-(1-methylcyclobutoxy)-2-[(22S)-4,17,22,28-tetramethyl-21,27-dioxa-1,5,7,8-tetraazahexacyclo[26.2.2.16,9.110,14.02,7.015,20]tetratriaconta-2,4,6(34),8,10(33),11,13,15(20),16,18-decaen-3-yl]acetic acid

HRID 1400765Notes

Reaction equation

HRID 1400765 reaction equation
[OH:1][C@@H:2]([C:7]1[C:36]([CH3:37])=[N:35][C:34]2=[CH:38][C:31]3=[N:32][N:33]2[C:8]=1[N:9]1[CH2:43][CH2:42][C:12]([CH3:44])([O:13][CH2:14][CH2:15][CH2:16][CH2:17][C@H:18]([CH3:41])[O:19][C:20]2[CH:21]=[CH:22][C:23]([CH3:40])=[CH:24][C:25]=2[C:26]2[CH:39]=[C:30]3[CH:29]=[CH:28][CH:27]=2)[CH2:11][CH2:10]1)[C:3]([O:5]C)=[O:4].C(O[C:49]1([CH3:53])[CH2:52][CH2:51][CH2:50]1)(=O)C.Cl(O)(=O)(=O)=O.[OH-].[Na+]>C(Cl)Cl.CO>[CH3:53][C:49]1([O:1][C@@H:2]([C:7]2[C:36]([CH3:37])=[N:35][C:34]3=[CH:38][C:31]4=[N:32][N:33]3[C:8]=2[N:9]2[CH2:43][CH2:42][C:12]([CH3:44])([O:13][CH2:14][CH2:15][CH2:16][CH2:17][C@H:18]([CH3:41])[O:19][C:20]3[CH:21]=[CH:22][C:23]([CH3:40])=[CH:24][C:25]=3[C:26]3[CH:39]=[C:30]4[CH:29]=[CH:28][CH:27]=3)[CH2:11][CH2:10]2)[C:3]([OH:5])=[O:4])[CH2:52][CH2:51][CH2:50]1

Participants

7

Reactant 4

HCID 14798Sodium HydroxideHCID 24247Perchloric AcidHCID 133961301-Methylcyclobutyl acetateHCID 86710817methyl (2S)-2-hydroxy-2-[(22S)-4,17,22,28-tetramethyl-21,27-dioxa-1,5,7,8-tetraazahexacyclo[26.2.2.16,9.110,14.02,7.015,20]tetratriaconta-2,4,6(34),8,10(33),11,13,15 (20),16,18-decaen-3-yl]acetate

Product 1

HCID 73386953(2S)-2-(1-methylcyclobutoxy)-2-[(22S)-4,17,22,28-tetramethyl-21,27-dioxa-1,5,7,8-tetraazahexacyclo[26.2.2.16,9.110,14.02,7.015,20]tetratriaconta-2,4,6(34),8,10(33),11,13,15(20),16,18-decaen-3-yl]acetic acidYield 36.2%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent2×

Procedure

To a stirred solution of methyl (2S)-2-hydroxy-2-[(22S)-4,17,22,28-tetramethyl-21,27-dioxa-1,5,7,8-tetraazahexacyclo[26.2.2.16,9.110,14.02,7.015,20]tetratriaconta-2,4,6(34),8,10(33),11,13,15(20),16,18-decaen-3-yl]acetate (40 mg, 0.067 mmol) in DCM (2 mL) and 1-methylcyclobutyl acetate (599 mg, 4.68 mmol) at rt was added 70 wt % perchloric acid (0.017 mL, 0.200 mmol). After 3 h, the reaction mixture was diluted with DCM (25 mL), carefully quenched with sat. NaHCO3 (5 mL), organic layer separated and washed with brine (10 mL), dried (Na2SO4), filtered and concentrated to give yellow paste. The crude was then tretated with 1N NaOH (0.334 mL, 0.334 mmol) in MeOH (1 mL) at 75° C. for 3 h. Mixture was then cooled and purified by prep HPLC to afford (2S)-2-(1-methylcyclobutoxy)-2-[(22S)-4,17,22,28-tetramethyl-21,27-dioxa-1,5,7,8-tetraazahexacyclo[26.2.2.16,9.110,14.02,7.015,20]tetratriaconta-2,4,6(34),8,10(33),11,13,15(20),16,18-decaen-3-yl]acetic acid (15.8 mg, 0.024 mmol, 36.2% yield). 1H NMR (500 MHz, DMSO-d6) δ 8.52 (s, 1H), 7.91 (d, J=7.9 Hz, 1H), 7.51 (t, J=7.6 Hz, 1H), 7.33 (d, J=7.6 Hz, 1H), 7.17-7.11 (m, 2H), 7.08 (s, 1H), 7.05 (d, J=8.2 Hz, 1H), 5.49 (s, 1H), 4.62 (d, J=5.5 Hz, 1H), 4.45 (t, J=12.2 Hz, 1H), 3.61-3.53 (m, 1H), 3.40-3.20 (m, 7H), 2.83 (d, J=10.4 Hz, 1H), 2.29 (s, 3H), 2.22 (q, J=10.0 Hz, 1H), 2.01-1.86 (m, 4H), 1.82 (br. s., 1H), 1.70-1.62 (m, 5H), 1.58-1.41 (m, 4H), 1.28 (s, 3H), 1.17 (s, 3H), 1.07 (d, J=5.8 Hz, 3H). LCMS (M+H)=653.6.

Workup

  1. customcarefully quenched with sat. NaHCO3 (5 mL), organic layer
  2. customseparated
  3. washwashed with brine (10 mL)
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customto give yellow paste
  8. temperatureMixture was then cooled
  9. custompurified by prep HPLC

Sources & evidence

ORD record
ord-721b30c6d237473bbb5b039759411668
Source dataset
uspto-grants-2014_12
Patent number
US08906929B2

Reaction notes

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