Table 1 Preparation of hydrazino tripeptides 3a–g
From: Synthesis of hybrid hydrazino peptides: protected vs unprotected chiral α-hydrazino acids
Product | R1 | R2 | R3 | Yielda |
|---|---|---|---|---|
3a | –CH2CH(CH3)2 | –CH2CH(CH3)2 | OH | 19 |
3b | –CH(CH3)2 | –CH(CH3)2 | OH | 12 |
3c | –CH2CH(CH3)2 | –CH2CH(CH3)2 | OEt | 10 |
3d | –CH(CH3)2 | –CH(CH3)2 | OEt | 27 |
3e | –CH2CH(CH3)2 | –CH2CH(CH3)2 | NH2 | 71 |
3f | –CH(CH3)2 | –CH(CH3)2 | NH2 | 69 |
3g | –CH3 | –CH3 | NH2 | 69 |