Phenyl isocyanate → 2-{3-[1-tert-Butoxycarbonyl-5-(4-trimethylstannanyl-benzylamino)-pentyl]-ureido}-pentanedioic acid di-tert-butyl ester

HRID 625923ノート

反応式

HRID 625923 の反応式
[C:1]([O:5][C:6](=[O:34])[CH:7]([NH:17][C:18]([NH:20][CH:21]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:22][CH2:23][CH2:24][CH2:25][NH2:26])=[O:19])[CH2:8][CH2:9][C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])([CH3:4])([CH3:3])[CH3:2].C1(N=C=O)C=CC=CC=1.[CH3:44][Sn:45]([CH3:55])([CH3:54])[C:46]1[CH:53]=[CH:52][C:49]([CH:50]=O)=[CH:48][CH:47]=1>>[C:1]([O:5][C:6](=[O:34])[CH:7]([NH:17][C:18]([NH:20][CH:21]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:22][CH2:23][CH2:24][CH2:25][NH:26][CH2:50][C:49]1[CH:52]=[CH:53][C:46]([Sn:45]([CH3:44])([CH3:55])[CH3:54])=[CH:47][CH:48]=1)=[O:19])[CH2:8][CH2:9][C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])([CH3:2])([CH3:3])[CH3:4]

参加物

4

反応物 3

HCID 7672Phenyl isocyanateHCID 138406964-Trimethylstannanyl-benzaldehydeHCID 744053812-[3-(5-Amino-1-tert-butoxycarbonyl-pentyl)-ureido]-pentanedioic acid di-tert-butyl ester

生成物 1

HCID 668983092-{3-[1-tert-Butoxycarbonyl-5-(4-trimethylstannanyl-benzylamino)-pentyl]-ureido}-pentanedioic acid di-tert-butyl ester収率 40%

実験手順

The following compounds of the general structure 8 were prepared in overall yields ranging from 20-60% by the route depicted in Scheme B. The key synthetic intermediate (4) was reacted with the appropriate phenylisocyanate at room temperature to afford the desired protected intermediates (5) in good yields. The t-butyl ester protecting groups were removed in the presence of 50% TFA in DCM for 1 hour at room temperature. Upon completion, the reactions were concentrated on a rotary evaporator purified by HPLC or recrystallization to afford the desired products (6) in 40-90% yield.

後処理

  1. customThe following compounds of the general structure 8 were prepared
  2. customin overall yields
  3. customto afford the
  4. customThe t-butyl ester protecting groups were removed in the presence of 50% TFA in DCM for 1 hour at room temperature
  5. concentrationUpon completion, the reactions were concentrated on a rotary evaporator
  6. custompurified by HPLC or recrystallization

出典と根拠

ORDレコード
ord-a8a023880a24413d8bfe5285ef519092
出典データセット
uspto-grants-2016_04
特許番号
US09309193B2

反応ノート

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