专利号:US-2024294462-A1 优先权日:2023-02-15 标题:Method for the Synthesis of Ionizable Lipids Using a Doubly Alkylated Intermediate 发明人:SAADATI FARIBA; TRAN HUY; CIUFOLINI MARCO; ATMURI N D PRASAD 权利人:NANOVATION THERAPEUTICS INC 摘要:Provided herein is a method for the preparation of ionizable, cationic amino lipids using a doubly alkylated nucleophilic intermediate to produce a ketone. The ketone, or a corresponding alcohol, is subjected to one or more synthesis steps to add an ionizable moiety thereto. The method can be advantageously employed for the synthesis of unsymmetrical analogues of the above lipids that would be considerably more difficult to make by alternative strategies. The method can also be used to prepare symmetrical ionizable, cationic amino lipids with fewer steps and/or with the use of fewer hazardous chemicals than known synthesis methods.
专利号:US-2008287649-A1 优先权日:2006-12-29 标 题 :Methods for the synthesis of cyclic peptides 发明人:CHEN LIN; HAN YEUN-KWEI; ROBERTS CHRISTOPHER R 权利人:CHEN LIN; HAN YEUN-KWEI; ROBERTS CHRISTOPHER R 摘要:Methods for the synthesis of cyclic peptides are provided, as well as novel dipeptide compounds. The methods include the solid phase synthesis of a dipeptide, which is the coupled to a second peptide in a solid phase reaction. The peptide is then cyclized following the coupling reaction. The methods and dipeptides are particularly useful for the synthesis of MC-4 receptor agonist peptides.
专利号:US-3944619-A 优先权日:1976-02-20 标 题 :Synthesis of d-2-amino-1-butanol 发明人:SINGH BALWANT 权利人:AMERICAN CYANAMID CO 摘要:D-2-Amino-1-butanol, for the synthesis of ethambutol hydrochloride, d,d'-2,2'-(ethylenediimino)di-1-butanol dihydrochloride, is produced in high purity and good yields by the reaction of butene-1, a nitrile, preferably an excess of acetonitrile, and chlorine to form N-[1-(chloromethyl)propyl]acetimidoyl chloride which is hydrolyzed to dl-2-amino-1-butanol, which can be isolated as the hydrochloride, or free base, or a mixture, resolved with L(+)- tartaric acid and the d-2-amino-1-butanol reacted with ethylene dichloride and then hydrochloric acid to form ethambutol hydrochloride. A minimum of by-products which are conveniently split out permits the economical synthesis of a pharmaceutical grade product.
专利号:US-8415510-B2 优先权日:2008-02-28 标题 :Synthesis of a PEG-6 moiety from commercial low-cost chemicals 发明人:ENGELL TORGRIM 权利人:ENGELL TORGRIM; GE HEALTHCARE LTD 摘要:The present invention provides novel synthesis's for obtaining a protecting group aminoxy PEG-6 linker from cost effective, and readily available starting materials and chemicals or modified polyethylene glycols. More specifically, a novel synthesis of obtaining a modified Boc-protected aminoxy PEG-6 linker was achieved so that said linker may be attached to a vector such as a peptide based fragment.
专利号:US-8536375-B2 优先权日:2008-12-22 标题:Synthesis of obtaining modified polyethylene glycol intermediates 发明人:ENGELL TORGRIM 权利人:ENGELL TORGRIM; GE HEALTHCARE LTD 摘要:The present invention provides novel and more efficient synthesis's for obtaining an intermediate in the synthesis of obtaining a protecting group aminoxy PEG linker.
专利号:WO-0140193-A1 优先权日:1999-12-03 标题:Method for the synthesis of pyrazolines 发明人:BOLDI ARMEN M 权利人:CHEMRX ADVANCED TECHNOLOGIES I; BOLDI ARMEN M 摘要:The present invention provides a method for the synthesis of compounds of Formula (I). Also claimed are novel intermediates and their methods of synthesis.
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合成参考文献
参考文献:10.1007/s10529-010-0219-7 摘要:Namgung R, Brumbach JH, Jeong JH, Yockman JW, Kim SW, Lin C, Zhong Z, Feijen J, Engbersen JF, Kim WJ. Dual bio-responsive gene delivery via reducible poly(amido amine) and survivin-inducible plasmid DNA. Biotechnol Lett. 2010 Jun;32(6):755–64. doi: 10.1007/s10529-010-0219-7.