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Peptide-Based Drug Design

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Synthesis of Multiepitope Vaccine Construct 267<br />

2.2. Reagents<br />

2.2.1. Solvents<br />

1. N,N´-Dimethyl formamide (DMF) (Fisher Scientific).<br />

2. Piperidine (Sigma) (see Note 2).<br />

3. N-Methyl morpholine (NMM) (Acros).<br />

4. Chloroform (Aldrich).<br />

5. Acetic acid (Aldrich).<br />

6. Acetonitile (Sigma).<br />

2.2.2. Resin<br />

1. TentaGel S RAM resin (Rapp Polymere).<br />

2.2.3. Coupling Reagents<br />

1. O-(7-Azabenzotriazole-1-yl)-N,N,N´N´-tetramethyluronium hexafluorophosphate<br />

(HATU) (Applied Biosystems) (see Note 3).<br />

2. 1-Hydroxy benzotriazole (HOBt) (Novabiochem).<br />

3. O-(Benzotriazol-1-yl)-N,N,N’,N’-tetramethyluronium tetrafluoroborate (TBTU)<br />

(Novabiochem).<br />

4. O-Benzotriazole-N,N,N´,N´-tetramethyl-uronium-hexafluoro-phosphate (HBTU)<br />

(Novabiochem).<br />

2.2.4. Amino Acids<br />

Standard Fmoc-protected amino acids are purchased from Advanced<br />

Chemtech (see Note 4). Unusual amino acids (all from Bachem):<br />

1. Dde-Lys(Fmoc)-OH.<br />

2. Fmoc-Lys(Aloc)-OH.<br />

3. Boc-Lys(Fmoc)-OH.<br />

4. Fmoc-βAla-OH.<br />

5. Boc-His(Boc)-OH.<br />

6. Boc-Ser( t Bu)-OH.<br />

2.2.5. Other Reagents<br />

1. Tetrakis triphenylphosphine palladium, (PPh3)4Pd (Chem-Impex).<br />

2. Diethyl dithio-carbamate (Mallinkrodt Baker).<br />

3. Hydrazine (Sigma).<br />

4. Allyl alcohol (Acros).<br />

5. Trifluoroacetic acid (TFA) (Sigma).<br />

6. �-Cyano-4-hydroxycinnamic acid (Fluka).

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