CAS: 33725-74-5; Tetrabutylammonium (Tetrahydroborate)

专利信息

专利号:WO-2010078250-A1
优先权日:2008-12-30
标 题:Synthesis of (2-amino)-tetrahydrocarbazole-propanoic acid
发明人：WEI YUAN; Li tianqiao; CHI YONGXIANG; ZHU JINGYANG
权利人:CHIRAL QUEST INC; WEI YUAN; Li tianqiao; CHI YONGXIANG; ZHU JINGYANG
摘要:The present invention provides a new approach to the synthesis of 2-amino-tetrahydrocarbazole-propanoic acid, a key intermediate for the synthesis of Ramatroban. More specifically, a synthesis of 2-amino-tetrahydrocarbazole- propanoic acid which includes oxidizing an aminocyclohexanol to form an aminocyclohexanone, condensing the aminocyclohexanone to form a tetrahydrocarbazole, deprotecting the tetrahydrocarbazole to yield a racemic mixture of a tetrahydrocarbazole, resolving the racemic mixture to obtain a yield mixture with an enantiomeric excess of one enantiomer over another, alkylating the excess enantiomer to yield an alkyl ester, and hydrolyzing the alkyl ester to yield 2-amino-tetrahydrocarbazole-propanoic acid.

专利号:US-7202370-B2
优先权日:2003-10-27
标 题 :Semi-synthesis of taxane intermediates from 9-dihydro-13-acetylbaccatin III
发明人：NAIDU RAGINA
权利人:CONOR MEDSYSTEMS INC
摘要:A method is provided for the semi-synthesis of taxane intermediates useful in the preparation of paclitaxel and docetaxel from 9-dihydro-13-acetylbaccatin III. The preparation of a suitably protected baccatin III backbone from 9-dihydro-13-acetylbaccatin III, and the insertion of the phenylisoserine side chain onto the protected baccatin III from 9-dihydro-13-acetylbaccatin III to form the taxane derivatives, paclitaxel and docetaxel is disclosed.

专利号:US-4937367-A
优先权日:1987-07-15
标 题:Process for the preparation of intermediates for the synthesis of fosfomycin
发明人：CASTALDI GRAZIANO; GIORDANO CLAUDIO
权利人:ZAMBON SPA
摘要:A process is described for the preparation of intermediates useful in the synthesis of Fosfomycin. n More particularly, an enantioselective process is described for the preparation of derivatives of (1S,2S)-1,2-dihydroxypropyl-phosphonic acid of formula ##STR1## wherein R 2 and R 3 have the meanings reported in the specification.

专利号:US-7838694-B2
优先权日:2004-04-23
标题 :Semi-synthesis and isolation of taxane intermediates from a mixture of taxanes
发明人：NAIDU RAGINA; FOO SAMUEL SIANG KIANG
权利人:CHATHAM BIOTEC LTD
摘要:A process is provided for the semi-synthesis and isolation of taxane intermediates useful in the preparation of paclitaxel and docetaxel, in particular, the semi-synthesis and isolation of 10-deacetylbaccatin III, the semi-synthesis of a mixture of 10-deacetylbaccatin III and baccatin III, and protected derivatives thereof, from a mixture of taxanes.

专利号:WO-2024185775-A1
优先权日:2023-03-06
标 题:Long-chain alkenyloxy–substituted benzoyl derivative and oligonucleotide synthesis method using same
发明人：OKADA YOHEI; INANAGA KAZATO; SHOJI Yukiya; MIZUFUNE HIDEYA; SUDO TATSUYA; ADACHI Sota; HOSOI Kazushi
权利人:SPERA PHARMA INC; TOKYO UNIV OF AGRICULTURE AND TECHNOLOGY
摘要:The purpose of the present invention is to provide a novel pseudo–solid phase protecting group that can be used in liquid-phase oligonucleotide synthesis. The purpose of the present invention is also to provide an oligonucleotide synthesis method that uses a novel pseudo–solid phase protecting group.　The present invention provides a compound represented by formula (1) (in which R represents a C14–60 alkenyl group, n represents 2 or 3, m represents 0 or 1, p represents 1 or 2, X represents C, N, O, or S, Y represents a single bond or B(CH 2 ) t * or may form a ring with X, and Z represents a single bond or (CH 2 ) s (s being an integer from 1 to 5)). The present invention also provides an oligonucleotide production method that uses the compound.

专利号:US-8211205-B1
优先权日:2009-07-28
标题:Method of controlled synthesis of nanoparticles
发明人：DIDENKO YURI TROFIMOVICH; NI YUHUA
权利人:DIDENKO YURI TROFIMOVICH; NI YUHUA; UT DOTS INC
摘要:A method for the synthesis and manufacture of metal nanoparticles using metal inorganic salts. The method is simple and uses inexpensive chemicals. The procedure produces nanometals in 100% yields. Method is scalable and produces nanoparticles in unlimited quantities. In this method, a metal inorganic salt is dissolved in a reaction medium, comprised of a solvent and organic amine to create a metal/amine complex. A reducing agent, comprised of a solvent and Sodium Borohydride (NaBH 4 ), is then mixed with the metal/amine complex through titration or through a continuous flow process. The resulting nanoparticles are then precipitated through the addition of methanol and centrifugation and decanted. The decanted nanoparticles can then be suspended in a solvent for storage.