HuagongsheHuagongshe Chemistry Print Report · For research reference only
Trifluoroacetic acid → HPro-DTrp-Phe-DTrp-Leu-MeNleNH2
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Trifluoroacetic acid | HCID 6422 | — |
| Reactant | 1,1-Ethanedithiol | HCID 33645 | — |
| Reactant | BocPro-DTrp-Phe-DTrp-Leu-MeNleNH2 | HCID 131713816 | — |
| Solvent | Dimethyl Sulfide | HCID 1068 | — |
| Product | HPro-DTrp-Phe-DTrp-Leu-MeNleNH2 | HCID 131713817 | — |
Reaction Steps
Condensation of BocPro-DTrp-PheOH (part B of Example 17, 0.700 g.) and HDTrp-Leu-MeNleNH2 (0.520 g.) using dicyclohexylcarbodiimide and 1-hydroxybenzotriazole gave BocPro-DTrp-Phe-DTrp-Leu-MeNleNH2 in 64% yield. De-t-butoxycarbonylation of BocPro-DTrp-Phe-DTrp-Leu-MeNleNH2 (0.750 g.) using trifluoroacetic acid in dimethyl sulfide and ethanedithiol gave HPro-DTrp-Phe-DTrp-Leu-MeNleNH2, which was isolated as the amorphous white solid phosphate (1:1) salt tetrahydrate in 30% yield.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04472305 |
| Source dataset | uspto-grants-1984_09 |
| ORD ID | ord-4f2df76b99a94528819fc25444ef0b76 |
| Source note | uspto-grants-1984_09 |