Hydrochloric Acid → HCID 14802668、化合物

HRID 65598ノート

反応式

HRID 65598 の反応式
Cl.N(OCCC(C)C)=O.[CH2:10]([O:17][C:18]([NH:20][C@H:21]([C:24]([NH:26][C@H:27]([C:36]([N:38]=[N+]=[N-])=[O:37])[CH2:28][C:29]1[CH:34]=[CH:33][C:32]([OH:35])=[CH:31][CH:30]=1)=[O:25])[CH2:22][OH:23])=[O:19])[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.Cl.[CH3:42][O:43][C:44](=[O:55])[C@H:45]([CH2:51][CH:52]([CH3:54])[CH3:53])[NH:46][C:47](=[O:50])[CH2:48]N>O1CCCC1.C(N(CC)CC)C.CN(C)C=O>[CH3:42][O:43][C:44](=[O:55])[C@H:45]([CH2:51][CH:52]([CH3:53])[CH3:54])[NH:46][C:47](=[O:50])[CH2:48][NH:38][C:36](=[O:37])[C@H:27]([CH2:28][C:29]1[CH:34]=[CH:33][C:32]([OH:35])=[CH:31][CH:30]=1)[NH:26][C:24](=[O:25])[C@H:21]([CH2:22][OH:23])[NH:20][C:18]([O:17][CH2:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=[O:19]

参加物

8

反応物 4

HCID 313Hydrochloric AcidHCID 8053Isoamyl NitriteHCID 13751932methyl (2S)-2-(2-aminoacetamido)-4-methylpentanoate hydrochlorideHCID 54294707N-benzyloxycarbonyl-L-seryl-L-tyrosyl azide

生成物 1

HCID 14802668HCID 14802668、化合物

試薬・触媒・溶媒 3

HCID 6228Dimethylformamide溶媒HCID 8028Tetrahydrofuran溶媒HCID 8471Triethylamine溶媒2 回

反応条件

温度
-60 °C

実験手順

To a stirred solution of 7.49 g. of N-benzyloxycarbonyl-L-seryl-L-tyrosyl hydrazide [this compound is reported in Helv. Chim. Acta, 41, 1852 (1958)] in 50 ml. of N,N-dimethylformamide, cooled to -30° C., is first added 16.9 ml. of 3.607 N hydrogen chloride in tetrahydrofuran and then 2.7 ml. of isoamyl nitrite, and the resulting mixture is stirred at -30° C. for 30 minutes. The mixture, which contains N-benzyloxycarbonyl-L-seryl-L-tyrosyl azide, is next cooled to -60° C., and to it are added first 8.57 ml. of triethylamine, then 4.297 g. of glycyl-L-leucine methyl ester hydrochloride and finally 2.52 ml. more of triethylamine. The stirred mixture is allowed to warm to 0° C. during one hour and is stirred at 0° C. for one hour and kept at -5° C. for 48 hours. It is then filtered, and the filtrate is evaporated under reduced pressure at 40°-50° C. The gummy residue is partitioned between dilute hydrochloric acid and ethyl acetate, and the organic layer is separated, washed with saturated aqueous sodium bicarbonate and with saturated aqueous sodium chloride, dried, and evaporated to give a solid residue of N-benzyloxycarbonyl-L-seryl-L-tyrosylglycyl-L-leucine methyl ester; m.p. 166°-167° C., following two crystallizations from ethyl acetate-ether; [α]D25 -25.4° (2% in N,N-dimethylformamide); [α]D25 -38.2° (2.09% in methanol).

後処理

  1. additionto it are added first 8.57 ml
  2. temperatureto warm to 0° C. during one hour
  3. waitkept at -5° C. for 48 hours
  4. filtrationIt is then filtered
  5. customthe filtrate is evaporated under reduced pressure at 40°-50° C
  6. customThe gummy residue is partitioned between dilute hydrochloric acid and ethyl acetate
  7. customthe organic layer is separated
  8. washwashed with saturated aqueous sodium bicarbonate and with saturated aqueous sodium chloride
  9. customdried
  10. customevaporated

出典と根拠

ORDレコード
ord-5f8374911abc4e3eb30bcfdb09930e6c
出典データセット
uspto-grants-1978_12
特許番号
US04128540

反応ノート

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