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Thus, the importance of the polyanionic moiety position relative to peptide ligand could be easily examined by just varying the position of the cysteine residue, i.e., N- or C-terminally, within the peptide ligand.
Therefore, the structure of compound 2 was determined to be N- 1-amino-3-methyl-1-oxobutan-2-yl -1- 4-fluorobenzyl -1 H-iN- 1-amino-3-methyl-1-oxobutan-2-yl -1- 4-fluorobenzyl -1der the same coN- 1-amino-3-methyl-1-oxobutan-2-yl -1- 4-fluorobenzyl -1ompouN- 1-amino-3-methyl-1-oxobutan-2-yl -1- 4-fluorobenzyl -1dimethylpropyl moiety (positioN- 1-amino-3-methyl-1-oxobutan-2-yl -1- 4-fluorobenzyl -1
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The analyses by H and C NMR, DEPT, HH COSY, HSQC and HMBC spectra of compound 1 revealed the presence of a 1-benzyl-1 H-indazole moiety (positions 3′ to 7′a and positions 1″ to 7″) and an N- 1-amino-3,3-dimethyl-1-oxobutan-2-yl -carboxamide moiety (positioN- 1-amino-3,3-dimethyl-1-oxobutan-2-yl -carboxamide
The C NMR spectrum of compound 4 was very similar to that of compound 2 except for a benzyl moiety (positions 2″ to 7″) as shown in Table 5.
The analyses by H and C NMR, HH COSY, HMQC, HMBC, N HMBC and 1D-NOE spectra of compound 2 revealed the presence of a 1- 4-fluorobenzyl -1 H-indole (positions 1- 4-fluorobenzyl -1ons 1- 4-fluorobenzyl -1aphthalen-1- 4-fluorobenzyl -1ieties (position 1 and positions 1″′ to 8″′a) as shown in Fig. 4a, b.
We have recently designed and tested peptide analogs composed of chemical spacers and reactive moieties positioned strategically to promote permanent attachment.
Therefore, the connectivity of the two moieties (positions 1 and 3′) was not observed.
For the generation of HLA-A*33 03 HLA-A*33 03conditetramersgands with the photoconditionaloiety at position 8 instead of position 4 was used.
Unlike erythromycin-A (which interacts with bacterial 23S ribosomal RNA by contacts limited to hairpin 35 in domain II of the ribosomal RNA and to the peptidyl transferase loop in domain V), telithromycin is not a true macrolide because the l-cladinose moiety at position C3 has been replaced by a keto group and by alkylaryl side chains at positions C11,C12.
➢ The presence of a Me or OMe (electron-donating group) in the aryl moiety in position 2 as in the pyridazine 10b,c enhances the biological activity.
We recently reported that thymine derivatives carrying a naphtholactam or naphthosultam moiety at position 4 of a (Z -butenyl chain inhibit TMPKmt in the subμM range.
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