P substance peptide probe capable of specific recognition of neurokinin-1 receptor protein, and preparation and application thereof
A technology of receptor protein and neurokinin, applied in the preparation method of peptide, preparation for in vivo test, tachykinin, etc.
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Embodiment 1
[0087] The preparation method of the substance P polypeptide dimer comprises the following steps:
[0088] a. Preparation of substance P sequence
[0089] (1) Synthesize using a microwave peptide synthesizer, put Rink amide resin (312mg, 0.25mmol) and Fmoc methionine (290.6mg, 0.75mmol) in a reaction bottle, add organic base and coupling agent, in DMF solution After reacting under microwave conditions for 30 minutes, the Fmoc protecting group was removed to obtain a resin coupled with methionine;
[0090] (2) Repeat step (1) in turn, wherein the raw amino acids are replaced by Fmoc leucine (265.06mg, 0.75mmol), Fmoc glycine (223.0mg, 0.75mmol), Fmoc benzoxyline (290.57mg, 0.75mmol) , Fmoc benzoic acid (290.57mg, 0.75mmol), Fmoc glutamine (458.03mg, 0.75mmol) with Trt protecting group on the side, Fmoc glutamine (458.03mg, 0.75mmol) with Trt protecting group on the side ), Fmoc proline (253.03mg, 0.75mmol), Fmoc lysine (351.41mg, 0.75mmol) with Boc protecting group on the sid...
Embodiment 2
[0104] This embodiment is an improvement made on the basis of Embodiment 1. For the same part as Embodiment 1 in this embodiment, please refer to the content disclosed in Embodiment 1 for understanding, and the content disclosed in Embodiment 1 should also be used as the content of this embodiment The content is not repeated here.
[0105] The preparation method of the substance P polypeptide dimer comprises the following steps:
[0106] Preparation of Substance P Polypeptide Polymers
[0107] (1) Using solid-phase Fmoc technology, the resin obtained in step a of Example 1 and the above-mentioned amino acids sequentially coupled and Fmoc lysine (339.38mg, 0.75mmol) with a protective group Allco on the side were placed in a reaction flask, Add organic base and coupling agent, and react in DMF solution to couple it to the peptide chain.
[0108] (2) Add Pd(Ph 3 P) 4 (105.6mg, 0.1mmol) and PhSiH 3 (1.48mL, 12mmol), react in DMF for 10 minutes to remove Allco on the side chai...
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