1
|
|
2
|
|
3
|
KARLE ISABELLAL, BODANSZKY MIKLOS. Rigid conformation in tert.-butyloxycarbonyl-l-alanine ortho-nitrophenyl ester. ACTA ACUST UNITED AC 2009. [DOI: 10.1111/j.1399-3011.1988.tb00934.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
4
|
BODANSZKY MIKLOS, TOLLE JOHNC, GARDNER JERRYD, WALKER MICHAELD, MUTT VIKTOR. CHOLECYSTOKININ (PANCREOZYMIN). ACTA ACUST UNITED AC 2009. [DOI: 10.1111/j.1399-3011.1980.tb02964.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
5
|
Roy J, Havran RT, Schwartz IL, Walter R. Oxytocin analogs with substitutions in postions 3 and 4. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 2009; 7:171-8. [PMID: 1140889 DOI: 10.1111/j.1399-3011.1975.tb02429.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthesis and biological properties are reported for some analogs of oxytocin with replacements of the isoleucine residue in position 3, i.e., (3-proline)oxytocin and(3-D-alanine)oxytocin, and the glutamine residue in position 4, i.e., (4-D-alanine)-oxytocin and (4-D-leucin)oxytocin. (3-Proline)oxytocin exhibited smaller than0.02 U/MG oxytocic activity, 0.005 plus or minus smaller than 0.001 U/mg rat pressor activity and 0.003 plus or minus 0.0001 U/mg antidiuretic activity. (3-D-Alanine)oxytocin had no agonistic activity in the bioassays tested except for the rat antidiuretic assay (smaller than 0.0005 U/mg). The 4-D-alanine analog showed 0.05 plus or minus 0.003 U/mg oxytocic activity, 0.07 plus or minus 0.01 U/mg avian vasodepressor activity, and smaller than 0.001 U/mg rat antidiuretic activity. (4-D-Leucine)oxytocin possessed 0.001 plus or minus U/mg rat pressor activity, and showed slight inhibitory properties in the oxytocic and avian vasodepressor assays, inhibiting the oxytocin response in the latter assay by about 60% at a girnibe-to-analog ratio of 1:5000. The activity profiles of the analogs are compared to that of oxytocin and are discussed on the basis of the proposed solution conformation of oxytocin.
Collapse
|
6
|
Anand JK, Sadozai KK, Hakomori S. A simple method for the synthesis of ceramides and radiolabeled analogues. Lipids 1996; 31:995-8. [PMID: 8882981 DOI: 10.1007/bf02522695] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A simple method has been developed for the coupling of amines to carboxylic acids. N-Fatty-acyl-sphingosine, cerebroside, and GM3, as well as their respective [14C] analogues, were synthesized using diethylphosphoryl cyanide as a potent coupling agent in the presence of triethylamine. The reaction procedure is rapid, racemization-free, and utilizes acids without derivatization. The desired ceramide products were obtained in 85-90% yield within one hour. The facile method presented here can also be used to synthesize [3H]-N-acyl-labeled, as well as [14C] [3H] double-labeled, ceramides.
Collapse
Affiliation(s)
- J K Anand
- Biomembrane Institute, Seattle, Washington 98119-4237, USA
| | | | | |
Collapse
|
7
|
Bednarek MA, Bodanszky M. Coupling in the absence of tertiary amines. V. Removal of the 2-nitrobenzenesulfenyl (NPS) group with 1-hydroxybenzotriazole in the presence of aniline or N-methylaniline. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1995; 45:64-69. [PMID: 7775009 DOI: 10.1111/j.1399-3011.1995.tb01568.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In a search for conditions of acidolytic removal of amine protecting groups leading to salts of the deblocked amine that can be acylated without addition of a tertiary amine, cleavage of the 2-nitrobenzenesulfenyl (Nps) group with hydroxybenzotriazole (HOBt) in 2,2,2-trifluoroethanol was attempted. The Nps group was smoothly removed, but the resulting salt of the amine component could not be acylated unless deprotonated with a tertiary base. A rationale is now proposed for this unsatisfactory outcome of the cleavage reaction and for the concomitant surprising reduction of HOBt to benzotriazole. Based on the proposed mechanism, a new approach was designed for the removal of the Nps group. It was cleaved with HOBt in the presence of weakly basic nucleophiles such as aniline, N-methylaniline or 8-aminoquinoline. The protecting group was transferred smoothly to the amino group of the nucleophilic acceptor leaving the deblocked amine component in the form of its HOBt salt. This was then readily acylated without addition of a tertiary amine.
Collapse
Affiliation(s)
- M A Bednarek
- Department of Synthetic Chemical Research, Merck Research Laboratories, Rahway, New Jersey, USA
| | | |
Collapse
|
8
|
|
9
|
Affiliation(s)
- M Bodanszky
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106
| |
Collapse
|
10
|
Bodanszky M. In search of new methods in peptide synthesis. A review of the last three decades. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1985; 25:449-74. [PMID: 3894264 DOI: 10.1111/j.1399-3011.1985.tb02200.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An attempt was made to discern ideas and trends in the development of peptide synthesis and to recognize general principles of the discipline. Introduction of efficient methods of activation and coupling during the early years of the reviewed period was followed by only moderate further improvements. Major advances were achieved by the discovery of novel methods of protection and by techniques of facilitation. Improvements in the methods of deblocking hold considerable promise and might bring significantly closer the goal of peptide synthesis: the direct preparation of homogeneous products.
Collapse
|
11
|
|
12
|
|
13
|
|
14
|
Martinez J, Laur J, Winternitz F. Synthesis of an IgG fragment decapeptide exhibiting phagocytosis stimulating activity of polymorphonuclear leucocytes. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1983; 22:119-24. [PMID: 6885245 DOI: 10.1111/j.1399-3011.1983.tb02075.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Fragment 335-344 of human IgG was synthesized stepwise, using active esters of N-protected amino acids and benzotriazolyloxytris (dimethylamino)phosphonium hexafluorophosphate for coupling. This fragment could be liberated from the carrier molecule by the two specific enzymes responsible for the release of tuftsin from the same carrier molecule: tuftsin endocarboxy-peptidase cleaves at the Arg-Glu bond and leukokininase at the Lys-Thr bond. This decapeptide fragment, Thr-Ile-Ser-Lys-Ala-Lys-Gly-Gln-Pro-Arg showed significant activity in stimulating phagocytosis of human polymorphonuclear leucocytes.
Collapse
|
15
|
|
16
|
|
17
|
Smith CW, Stahl GL, Walter R. Poly-N-acrylylpyrrolidine. A new resin in peptide chemistry. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1979; 13:109-12. [PMID: 429087 DOI: 10.1111/j.1399-3011.1979.tb01857.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Entirely beaded poly-N-acrylylpyrrolidine-co-bisacrylyl-1,2-diaminoethane-co-N-acrylyl-1,6-diaminohexane.HCl(PAP), a new resin on which to perform peptide chemistry, has been prepared by reverse phase suspension polymerization in quantitative yield. In addition to being a superior support to polystyrene, albeit readily adaptable to current techniques of peptide synthesis, its versatility has been furthur extended by the introduction and use of new peptide-to-polymer linking groups, which allow the use of the bidirectional approach to peptide chemistry. One such linkage, which connects the side chain of cysteine to PAP via an acid resistant S-carbamoyl bond, was used in a bidirectional synthesis of deamino-oxytocin. PAP solvates and swells in solvents with wide-ranging polarities, including aqueous media. Thus, peptide coupling reactions were performed in organic media of high and of low polarity as well as in aqueous solution.
Collapse
|
18
|
Coupek J, Labský J, Kálal J, Turková J, Valentová O. Reactive carriers of immobilized compounds. BIOCHIMICA ET BIOPHYSICA ACTA 1977; 481:289-96. [PMID: 15600 DOI: 10.1016/0005-2744(77)90263-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sphericanl macroporous reactive carriers capable of forming covalent bonds with amino acids and proteins were prepared by the suspension copolymerization of 2-hydroxyethyl methacrylate, ethylene dimethacrylate and p-nitrophenyl esters of methacrylic acid and methacryloyl derivatives of glycine, beta-alanine and epsilon-aminocaproic acid. The effect of the spacer length, pH and the type of the buffer used, concentration of reactive groups in the copolymer, concentration of the ligand and the participation of the hydrolytic and aminolytic reaction of p-nitrophenyl functional groups in the attachment of glycine, D,L-phenylalanine and serumalbumin was studied. Macroporous copolymers containing reactive functional groups can be used as active enzyme carriers, if their activity is not blocked by the presence of p-nitrophenol split off in the attachment reaction.
Collapse
|
19
|
Bodanszky M, Yang Lin C, Yiotakis AE, Mutt V, Said SI. Vasoactive intestinal peptide (VIP) from chicken. Bioorg Chem 1976. [DOI: 10.1016/0045-2068(76)90040-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
20
|
|
21
|
Klausner YS, Lin CY, Mutt V, Bodanszky M. Synthesis of the vasoactive intestinal peptide (VIP). Bioorg Chem 1973. [DOI: 10.1016/0045-2068(73)90035-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
22
|
Synthesis of the vasoactive intestinal peptide (VIP) I. The C-terminal cyanogen bromide fragment. Bioorg Chem 1972. [DOI: 10.1016/0045-2068(73)90004-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
23
|
|
24
|
Paulyukonis AAB, Karpavichus KI, Kil'disheva OV, Knunyants IL. Peptides of sarcolysin with ?-aminobutyric acid. Russ Chem Bull 1970. [DOI: 10.1007/bf00913946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
25
|
Ondetti MA, Sheehan JT, Bodanszky M. Synthesis of Gastrointestinal Hormones. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1968. [DOI: 10.1007/978-1-4614-4612-5_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
|
26
|
Levine SD, Bodanszky M. Secretin. The synthesis of a "wrong" hexapeptide amide, sequence 22-27. Biochemistry 1966; 5:3441-3. [PMID: 5972323 DOI: 10.1021/bi00875a008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
27
|
|
28
|
|
29
|
Nesvadba H, Young G. The synthesis of a protected heptapeptide related to evolidine: (=N)-benzoyloxycarbonyl-(=L)-leucyl-(=L)-prolyl-(=L)-valyl-(=L)-asparaginyl-(=L)-leucyl-(=L)-seryl-(=L)-phenylalanine benzyl ester. Tetrahedron Lett 1963. [DOI: 10.1016/s0040-4039(01)90637-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|