ホームMCPワークベンチSkills
ホームワークベンチ通知マイページ
llms.txt · MCPガイドプライバシーポリシー · 利用規約 · サポートv1.8.0
  1. ホーム
  2. /反応

Isobutyryl chloride → [(3S,6S,7R,8S)-3-[bis(tert-butoxycarbonyl)amino]-6-methyl-8-(1-naphthylmethyl)-4-oxo-1,5-dioxonan-7-yl]2-methylpropanoate

HRID 58960
ノート
印刷プレビュー

反応式

HRID 58960 の反応式
[C:1]([O:5][C:6]([N:8]([C@H:16]1[CH2:24][O:23][CH2:22][C@H:21]([CH2:25][C:26]2[C:35]3[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=3)[CH:29]=[CH:28][CH:27]=2)[C@@H:20]([OH:36])[C@H:19]([CH3:37])[O:18][C:17]1=[O:38])[C:9](=[O:15])[O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:39](Cl)(=[O:43])[CH:40]([CH3:42])[CH3:41]>CN(C1C=CN=CC=1)C.C(Cl)Cl>[C:11]([O:10][C:9]([N:8]([C:6]([O:5][C:1]([CH3:2])([CH3:3])[CH3:4])=[O:7])[C@@H:16]1[C:17](=[O:38])[O:18][C@@H:19]([CH3:37])[C@H:20]([O:36][C:39](=[O:43])[CH:40]([CH3:42])[CH3:41])[C@@H:21]([CH2:25][C:26]2[C:35]3[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=3)[CH:29]=[CH:28][CH:27]=2)[CH2:22][O:23][CH2:24]1)=[O:15])([CH3:13])([CH3:14])[CH3:12]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 62325Isobutyryl chlorideHCID 117974424tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-8-hydroxy-9-methyl-7-(1-naphthylmethyl)-2-oxo-1,5-dioxonan-3-yl]carbamate

生成物 1

HCID 117974254[(3S,6S,7R,8S)-3-[bis(tert-butoxycarbonyl)amino]-6-methyl-8-(1-naphthylmethyl)-4-oxo-1,5-dioxonan-7-yl]2-methylpropanoate収率 82.2%

試薬・触媒・溶媒 2

HCID 142844-(Dimethylamino)pyridine
触媒
HCID 6344Dichloromethane溶媒2 回

実験手順

To a solution of tert-butyl N-tert-butoxycarbonyl-N-[(3S,7S,8R,9S)-8-hydroxy-9-methyl-7-(1-naphthylmethyl)-2-oxo-1,5-dioxonan-3-yl]carbamate (290 mg, 0.548 mmol) and DMAP (201 mg, 1.64 mmol) in CH2Cl2 (2.7 mL) was added isobutyryl chloride (86 μL, 0.821 mmol) slowly to the flask and the resulting solution was stirred at room temperature for 20 h. The reaction mixture was dissolved in CH2Cl2 (4 mL), treated with Celite®, the solvent evaporated, and the adsorbed crude material purified by flash chromatography (SiO2, 0→15% EtOAc/hexanes) to provide [(3S,6S,7R,8S)-3-[bis(tert-butoxycarbonyl)amino]-6-methyl-8-(1-naphthylmethyl)-4-oxo-1,5-dioxonan-7-yl]2-methylpropanoate (270 mg, 82%) as a white powder: mp 130-132° C.; 1H NMR (400 MHz, CDCl3) δ 8.01-7.93 (m, 1H), 7.84 (dd, J=8.0, 1.5 Hz, 1H), 7.72 (d, J=8.1 Hz, 1H), 7.54-7.41 (m, 2H), 7.37 (dd, J=8.2, 7.0 Hz, 1H), 7.28 (dd, J=7.0, 1.3 Hz, 1H), 5.20 (dd, J=8.7, 5.7 Hz, 1H), 5.11 (app t, J=9.3 Hz, 1H), 5.08-4.97 (m, 1H), 4.06 (dd, J=11.8, 5.7 Hz, 1H), 3.86 (dd, J=11.9, 8.7 Hz, 1H), 3.66 (d, J=11.0 Hz, 1H), 3.50 (dd, J=10.8, 6.4 Hz, 1H), 3.23 (dd, J=14.0, 3.1 Hz, 1H), 2.74-2.55 (m, 2H), 2.37-2.20 (m, 1H), 1.42 (s, 18H), 1.37 (d, J=6.2 Hz, 3H), 1.26 (app dd, J=7.0, 4.4 Hz, 6H); ESIMS m/z 622 ([M+Na]+).

後処理

  1. additiontreated with Celite®
  2. customthe solvent evaporated
  3. customthe adsorbed crude material purified by flash chromatography (SiO2, 0→15% EtOAc/hexanes)

出典と根拠

ORDレコード
ord-8244359ac43b40219e34a9e8d21e5cdd
出典データセット
uspto-grants-2016_09
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09439422B2

反応ノート

読み込み中…

このページの内容参加物実験手順後処理出典と根拠反応ノート