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-9353057-B2 优先权日:2003-12-30 标 题:Synthesis of acyloxyalkyl carbamate prodrugs and intermediates thereof 发明人:GALLOP MARK A; DAI XUEDONG; SCHEUERMAN RANDALL A; RAILLARD STEPHEN P; MANTHATI SURESH K; YAO FENMEI; PHAN THU; LUDWIKOW MARIA; PENG GE; BHAT SEEMA 权利人:XENOPORT INC 摘要:Methods for synthesis of 1-(acyloxy)-alkyl carbamates, particularly, the synthesis of 1-(acyloxy)-alkyl carbamate prodrugs of primary or secondary amine-containing drugs are described. Also described are methods for synthesis of 1-(acyloxy)-alkyl N-hydroxysuccinimidyl carbonates which are useful intermediates in the synthesis of 1-(acyloxy)-alkyl carbamates are also described.
专利号:US-8273790-B2 优先权日:2005-01-14 标 题:Exo-selective synthesis of himbacine analogs 发明人:THIRUVENGADAM TIRUVETTIPURAM K; SUDHAKAR ANANTHA; LIM NGIAP KIE; KWOK DAW-IONG; WU GEORGE G; WANG TAO; HUANG MINGSHENG; GREEN MICHAEL D 权利人:THIRUVENGADAM TIRUVETTIPURAM K; SUDHAKAR ANANTHA; LIM NGIAP KIE; KWOK DAW-IONG; WU GEORGE G; WANG TAO; HUANG MINGSHENG; GREEN MICHAEL D; SCHERING CORP 摘要:This application discloses a novel process for the synthesis of himbacine analogs, as well as the compounds produced thereby. The synthesis proceeds by alternative routes including the cyclic ketal amide route, the chiral carbamate amide route, and the chiral carbamate ester route. The compounds produced thereby are useful as thrombin receptor antagonists. The chemistry disclosed herein is exemplified in the following synthesis sequence:
专利号:US-7241399-B2 优先权日:2000-09-08 标题 :Synthesis of nanoparticles 发明人:HAUBOLD STEPHAN; HAASE MARKUS; RIWOTZKI KARSTEN; WELLER HORST; MEYSSAMY HEIKE; IBARRA FERNANDO 权利人:CT ANGEWANDTE NANOTECH CAN 摘要:Methods for the preparation of inorganic nanoparticles capable of fluorescence, wherein the nanoparticles consist of a host material that comprises at least one dopant. The synthesis of the invention in organic solvents allows to gain a considerably higher yield compared to the prior art synthesis in water. All kinds of objects can advantageously be marked and reliably authenticated by using an automated method on the basis of a characteristic emission. Further, the size distribution of the prepared nanoparticles is nartower which renders a subsequent size-selected separation process superfluous.
专利号:US-2025019732-A1 优先权日:2023-07-07 标 题:Method for chemical-biological cascade synthesis of l-phosphinothricin and mutants therefor 发明人:XUE YAPING; CHENG FENG; ZOU SHUPING; XU JIANMIAO; ZHENG YUGUO 权利人:UNIV ZHEJIANG TECHNOLOGY 摘要:A method for chemical-biological cascade synthesis of L-phosphinothricin is carried out as follows: 3-(methylethoxyphosphinyl) ethyl propionate is synthesized by addition reaction from diethoxymethylphosphine and acrylic acid, then a condensation reaction is carried out with 3-(methylethoxyphosphinyl) ethyl propionate and sodium ethoxide as reactants, then the product is subjected to a hydrolysis reaction with diethyl oxalate to synthesize 4-(hydroxymethylphosphinyl)-2-oxobutyric acid, and finally, L-phosphinothricin is catalytically synthesized by taking 4-(hydroxymethylphosphinyl)-2-oxobutyric acid as a raw material, and using highly active and stable wet cells co-expressing phsophinothricin dehydrogenase and alcohol dehydrogenase or co-expressing a phsophinothricin dehydrogenase mutant and alcohol dehydrogenase as a biocatalyst, thereby solving the problems of existing L-phosphinothricin synthesis being tedious, low asymmetric amination reduction activity and poor stability.
专利号:US-6540970-B1 优先权日:1999-11-18 标题:Method for the synthesis of molecular sieves 发明人:STROHMAIER KARL G; VAUGHAN DAVID E W 权利人:EXXON MOBIL CHEM PATENTS INC 摘要:The present invention provides a method for the synthesis of MeAPO molecular sieves which includes the following steps: providing a source of alumina, a source of phosphorus, water, and a template suitable for forming a MeAPO molecular sieve; providing a source of metal (Me) including metal particles, the metal particles measuring, in their largest dimension, equal to or less than five nanometers; providing a water soluble organic solvent capable of solubilizing the source of metal; forming a synthesis mixture from the source of alumina, the source of phosphorus, the water, the template, the source of metal, and the solvent; and forming a MeAPO molecular sieve from the synthesis mixture.
摘要:Pu, L., Science of Synthesis, (2010) 45, 692. 摘要:Wicha, J., Science of Synthesis, (2009) 48, 233. 摘要:Anderson, E. A.; Lim, D. S. W., Science of Synthesis Knowledge Updates, (2015) 1, 60. 摘要:Vaultier, M.; Pucheault, M., Science of Synthesis Knowledge Updates, (2012) 4, 324. 摘要:Kwiecień, H., Science of Synthesis Knowledge Updates, (2014) 4, 280.