Diisopropylethylamine → {(S)-2-Methyl-1-[(R)-3-methyl-1-((1S,2S,6R,8S)-2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]dec-4-yl)-butylcarbamoyl-]propyl}-carbamic acid tert-butyl ester

HRID 1920624Notes

Reaction equation

HRID 1920624 reaction equation
FC(F)(F)C([O-])=O.[CH3:8][CH:9]([CH3:26])[CH2:10][C@@H:11]([NH3+:25])[B:12]1[O:20][C@H:19]2[C@:14]([CH3:24])([C@H:15]3[CH2:21][C@@H:17]([CH2:18]2)[C:16]3([CH3:23])[CH3:22])[O:13]1.[C:27]([NH:34][C@H:35]([C:39](O)=[O:40])[CH:36]([CH3:38])[CH3:37])([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28].CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.CCN(C(C)C)C(C)C>CN(C=O)C>[C:30]([O:29][C:27](=[O:28])[NH:34][C@H:35]([C:39](=[O:40])[NH:25][C@H:11]([B:12]1[O:20][C@H:19]2[C@:14]([CH3:24])([C@H:15]3[CH2:21][C@@H:17]([CH2:18]2)[C:16]3([CH3:23])[CH3:22])[O:13]1)[CH2:10][CH:9]([CH3:26])[CH3:8])[CH:36]([CH3:37])[CH3:38])([CH3:31])([CH3:33])[CH3:32]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 83693Boc-L-ValineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 20823732(S)-3-Methyl-1-((1S,2S,6R,8S)-2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]dec-4-yl)-butylammonium trifluoroacetate

Product 1

HCID 67492646{(S)-2-Methyl-1-[(R)-3-methyl-1-((1S,2S,6R,8S)-2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]dec-4-yl)-butylcarbamoyl-]propyl}-carbamic acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

The title compound is prepared as described in step B of example 1 but using (S)-3-Methyl-1-((1S,2S,6R,8S)-2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]dec-4-yl)-butylammonium trifluoroacetate ((C) in Synthetic Scheme 1) (for preparation see Kettner, C. A. and Shenvi, A. B. J. Biol. Chem. 1984, 259, p. 15106-15114 and Matteson, D. S. and Sadhu, K. M. J. Am. Chem. Soc. 1981, 103, p. 5241-5242) (2.395 g, 6.32 mMol), Boc-L-valine (1.373 g, 6.32 mMol), TBTU (2.23 g, 6.95 mMol, 1.1 equiv), DIEA (3.3 mL, 18.95 mMol, 3.0 equiv) and DMF (24 mL).

Workup

  1. customfor preparation

Sources & evidence

ORD record
ord-e7fb2655fae34340913a770ec169edf5
Source dataset
uspto-grants-2012_05
Patent number
US08173128B2

Reaction notes

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