5-Aminovaleric acid → HCID 19808302, compound

HRID 1577044Notes

Reaction equation

HRID 1577044 reaction equation
[NH2:1][C@H:2]([C:11]([N:13](C(=O)CCCCN)[C@H:14]([C:22]([NH:24][C@H:25]([C:30]([NH2:32])=[O:31])[CH2:26][CH2:27][S:28][CH3:29])=[O:23])[CH2:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1)=[O:12])CC1C=CC(O)=CC=1.[C:40]([CH:47]([CH2:51][CH2:52][CH2:53][NH2:54])[C:48]([OH:50])=[O:49])([O:42][C:43]([CH3:46])([CH3:45])[CH3:44])=[O:41].C([NH:62][C@H:63]([C:72](O)=O)[CH2:64][C:65]1[CH:70]=[CH:69][C:68]([OH:71])=[CH:67][CH:66]=1)(OC(C)(C)C)=O.C(N=[N+]=[N-])(OC(C)(C)C)=O.NCC[CH2:88][CH2:89][C:90](O)=[O:91].CN(C)C(=N)N(C)C.C(OC(NC(CC1C=CC(O)=CC=1)CCCC(O)=O)=O)(C)(C)C>CN(C=O)C>[C:40]([CH:47]([CH2:51][CH2:52][CH2:53][NH2:54])[C:48]([OH:50])=[O:49])([O:42][C:43]([CH3:45])([CH3:46])[CH3:44])=[O:41].[NH2:62][CH:63]([CH2:64][C:65]1[CH:66]=[CH:67][C:68]([OH:71])=[CH:69][CH:70]=1)[CH2:72][CH2:88][CH2:89][C:90]([NH:1][CH2:2][C:11]([NH:13][C@H:14]([C:22]([NH:24][C@H:25]([C:30]([NH2:32])=[O:31])[CH2:26][CH2:27][S:28][CH3:29])=[O:23])[CH2:15][C:16]1[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=1)=[O:12])=[O:91]

Participants

10

Reactant 7

HCID 1385-Aminovaleric acidHCID 61256Carbonazidic acid, 1,1-dimethylethyl esterHCID 664601,1,3,3-TetramethylguanidineHCID 117439L-Tyrosine, N-(1,1-dimethylethoxy)carbonyl-HCID 19808302HCID 19808302, compoundHCID 20559093HCID 20559093, compoundHCID 54112599HCID 54112599, compound

Product 2

HCID 19808302HCID 19808302, compoundYield 70%HCID 54142939HCID 54142939, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

⟦The first novel analogue we synthesised, described fully below, was tyrosyl-5-aminopentanoylphenylalanylmethionine amide H212. BOC-5-aminopentanoic acid was coupled in the third cycle of the procedure, and the BOC-tyrosine in the fourth (last) cycle. The BOC-5-aminopentanoic acid (m.p. 47.5°-48.5° from diisopropyl ether--40°-60° petroleum ether) was prepared in 70% yield by the reaction of BOC-azide and 5-aminopentanoic acid in DMF in the presence of tetramethylguanidine. After ammonolysis of the completed peptide resin, the peptide amide was chromatographed and deprotected. The desired peptide H212 was obtained in 80% overall yield. In this analogue the peptide bond --CO--NH-- between 2Gly and 3Gly can be regarded as being replaced by --CH2 --CH2 --. In the second analogue prepared 5-t-butoxycarbonylamino-6-(4-hydroxyphenyl)-hexanoic acid was coupled in place of BOC--2Gly--OH in the solid phase procedure, and the addition of BOC--1Tyr--OH omitted. The completed analogue 5-amino-6-(4-hydroxyphenyl)-hexanoyl-glycyl-phenylalanyl-methionine amide H211 was obtained in 40% overall yield (the lower yield than obtained for analogue H212 is a reflection of the low incorporation obtained in the final coupling).⟧

Workup

  1. custom⟦The first novel analogue we synthesised
  2. customAfter ammonolysis of the completed peptide resin, the peptide amide was chromatographed
  3. customwas obtained in 80% overall yield

Sources & evidence

ORD record
ord-022929ec40284b5685aacc93e7b7dde9
Source dataset
uspto-grants-1981_09
Patent number
USRE030731

Reaction notes

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