CAS: 3206-73-3; Dl-5-(1,2-Dithiolan-3-yl)Valeramide

专利信息

专利号:WO-2019202038-A3
优先权日:2018-04-19
标 题:Synthesis and polymerization of isosorbide-based monomethacrylates
发明人：PARVE JAAN; Vares Lauri; PEHK TÕNIS; GATHERGOOD NICHOLAS; PARVE OMAR; JANNASCH PATRIC; MATT LIVIA
权利人:UNIV TARTU; TALLINN UNIV OF TECHNOLOGY; NAT INSTITUTE OF CHEMICAL PHYSICS AND BIOPHYSICS
摘要:Isosorbide-5-methacrylate was obtained by enzymatic catalysis with Lipozyme RM IM in a highly regioselective manner in up to 87% yield. The process uses readily available acyl donors (methacrylic anydride or vinyl methacrylate), is easily scalable and chromatography free. Simple extractive workup followed by decoloration and filtration affords the monomer with up to > 99% purity. In addition, the developed enzymatic strategy was applied for the synthesis of a series of isosorbide 5- and 2-methacrylate derivatives. All the sythesized isosorbide monomethacrylates were radically polymerized with AIBN. The properties of these polymers with different side groups in either endo or exo configuration in the isosorbide structure was examined. The methacrylic isosorbide derivatives with OH-group were found to have very high glass transition temperature (Tg = 167 °C) and good thermal stability (at 5% weight loss under N2, Td,95 = 240 °C). The highest molecular weight (Mn = 80.6 kg/mol) was determined for the polymethacrylate with Ac-substitute.

专利号:US-8647848-B2
优先权日:2008-06-13
标题:Enzymatic synthesis of sphingolipids
发明人：HOLLMANN FRANK; THUM OLIVER; TOELLE CHRISTOPH; PROVINZANO ANGELO; KOREVAAR CORNELIS GERRIT NIJS
权利人:HOLLMANN FRANK; THUM OLIVER; TOELLE CHRISTOPH; PROVINZANO ANGELO; KOREVAAR CORNELIS GERRIT NIJS; EVONIK GOLDSCHMIDT GMBH
摘要:The invention relates to the enzymatic synthesis of sphingolipids and compositions that contain sphingolipids from lysosphingolipids and carbonic esters, and to cosmetic, dermatological or pharmaceutical formulations containing said sphingolipids or compositions.

专利号:US-5403937-A
优先权日:1993-04-30
标 题 :Process for preparing intermediates for the synthesis of antifungal agents
发明人：SAKSENA ANIL K; GIRIJAVALLABHAN VIYYOOR M; PIKE RUSSELL E; WANG HAIYAN; LOVEY RAYMOND G; LIU YI-TSUNG; GANGULY ASHIT K; MORGAN WILLIAM B; ZAKS ALEKSEY
权利人:SCHERING CORP
摘要:Disclosed is a process for preparing chiral compounds of the formula (I) (I) wherein: X1 and X2 are independently F or Cl; and E is -SO2R2, wherein R2 is C1-C6 alkyl, -C6H4CH3 or -CF3; its enantiomer and racemates thereof, useful in the synthesis of tetrahydrofuran azole antifungals. Novel compounds of the formula or wherein: X1 and X2 are independently F or Cl; B represents -C(O)Q* or -CH2OR''; Q* represents a chiral auxiliary group; R'' represents a hydroxy protecting group selected from -CH2C6H5, or -C(O)R1, wherein R1 is C1-C6 alkyl; and A represents Cl, Br, I or triazolyl; are also disclosed.

专利号:EP-2465936-A1
优先权日:2010-12-20
标题 :Enzymatic synthesis of statins and intermediates thereof
权利人:LEK PHARMACEUTICALS
摘要:The present invention discloses a process for preparing an active pharmaceutical ingredient (API) or intermediates thereof, notably particular step in the synthesis of an intermdiate useful for example in the preparation of statins, by using an enzyme capable of catalyzing oxidation or dehydrogenation. The invention further provides an expression system effectively translating said enzyme. In addition, the invention relates to a specific use of such enzyme for preparing API or intermediate thereof, and in particular for preparing statin or interemediate thereof.

专利号:US-8742013-B2
优先权日:2009-04-24
标 题:Synthesis of lipoamide-grafted high molecular compound and method therefor
发明人：NOH INSUP; JO SEONGYEUN; KIM DOYEON; WOO JUNGHOON
权利人:NOH INSUP; JO SEONGYEUN; KIM DOYEON; WOO JUNGHOON; NAT UNIV SEOUL TECH CTENTER
摘要:The present disclosure provides polymer compounds binding with lipoamide produced by the reaction of the primary amine group of lipoamide with the carboxy group of polysaccharide compounds such as chondroitin sulfates, carboxymethyl celluloses, or hyaluronic acids; functional compounds such as peptides, proteins, growth factors; or drugs; or biocompatible polymers such as poly(ethylene oxide), poly(vinyl alcohol), or poly(vinyl pyrrolidone). The present disclosure also provides their synthesis methods, products of hydrogels and films using the same as and methods for manufacturing the products.

专利号:US-5702928-A
优先权日:1994-07-18
标题 :Process for producing optically active triazole compounds and method of racemizing optically active triazole compounds
发明人：KAWADA NAOKI; YAMAZAKI NORITSUGU; IMOTO TAKAFUMI; IKURA KIYOSHI
权利人:DAICEL CHEM
摘要:PCT No. PCT/JP95/01416 Sec. 371 Date May 24, 1996 Sec. 102(e) Date May 24, 1996 PCT Filed Jul. 17, 1995 PCT Pub. No. WO96/02664 PCT Pub. Date Feb. 1, 1996A process for the asymmetric synthesis of a compound represented by general formula (II-R) easily at a low cost by using a lipase, and a process for producing a compound to be utilized in the above synthesis. (II-R)