L-PAG DERIVATIVES FOR TREATMENT OF SLEEP DISORDERED BREATHING (SDB)
申请人:KATES Michael J.
公开号:US20210085648A1
公开(公告)日:2021-03-25
Described herein are novel γ- and δ-propargyl carboxylic acids and esters. The novel compositions are antagonists of CSE and may be used to modulate of the activity of the carotid body, therefore providing therapeutic benefits for sleep-related breathing disorders and related conditions.
Synthesis of (2S,3S)-2-amino-3-methylpent-4-ynoic acid, a precursor amino acid for the preparation of tritium- or deuterium-labelled peptide in the isoleucine residue
作者:Hiroshi Hasegawa、Shinichi Arai、Yoshihiko Shinohara、Shigeo Baba
DOI:10.1039/p19930000489
日期:——
The synthesis of (2S,3S)-2-amino-3-methylpent-4-ynoic acid (Amp)1, its incorporation into a peptide chain, and the preparation of a deuterium-labelled peptide in the isoleucine residue are reported. Amino acid 1 was synthesized in three steps from 3-chlorobut-1-yne. The optical purity of amino acid 1 was determined by HPLC with a chiral stationary-phase column and was found to be more than 99%(ee)
报告了(2 S,3 S)-2-氨基-3-甲基戊-4-炔酸(Amp)1的合成,其掺入肽链以及在异亮氨酸残基中制备氘标记的肽的报道。 。从3-氯丁-1-炔以三步合成氨基酸1。氨基酸1的光学纯度通过HPLC用手性固定相色谱柱测定,发现其纯度超过99%(ee)。基于Fmoc策略通过固相合成法合成了Tyr-Amp-Leu。将三肽催化氘化以产生Tyr- [ 2 H] lle-Leu。氘的分布通过快速原子轰击质谱法(FAB-MS)和1313 C NMR光谱证实了氘完全位于异亮氨酸残基上。