CAS: 106-24-1; (E)-3,7-Dimethylocta-2,6-Dien-1-Ol

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106-25-2 105-87-3 141-12-8

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2-[(E)-2-[[(2E)-3,7-Dimethylocta-2,6-Dienoxy]-Dimethylsilyl]Ethenyl]Phenol 以 乙腈 用作溶剂,化学反应 0.5H,以91%的收率获得香叶醇
参考文献:Photochemically-Removable Silyl Protecting Groups
标题:Photochemically-Removable Silyl Protecting Groups
摘要:(Hydroxystyryl)Dimethylsilyl (Hsdms) And (Hydroxystyryl)Diisopropylsilyl (Hsdis) Reagents Have Been Developed That Readily Protect Primary And Secondary Alcohols And Can Be Removed On Irradiation With Short Wavelength Light In Polar Solvent.
Doi:10.1021/jo00077A010

专利信息

专利号:US-7247752-B2
优先权日:2004-10-01
标 题 :Methods for the synthesis of astaxanthin
发明人：LOCKWOOD SAMUEL F; TANG PENG CHO; NADOLSKI GEOFF; JACKSON HENRY L; FANG ZHIQIANG; DU YISHU; YANG MIN; GEISS WILLIAM; WILLIAMS RICHARD; BURDICK DAVID
权利人:CARDAX PHARMACEUTICALS INC
摘要:A method used for synthesizing intermediates for use in the synthesis of carotenoids and carotenoid analogs, and/or carotenoid derivatives. In some embodiments, the invention includes methods for synthesizing optically active intermediates useful for the synthesis of optically active carotenoids. Synthesis of optically active carotenoids, in one embodiment, may be accomplished by forming an optically active dihydroxy intermediate from ketoisopherone. The optically active dihydroxy intermediate may be converted into optically active astaxanthin derivatives.

专利号:US-11912654-B2
优先权日:2021-09-03
标 题:Process for stereospecific synthesis of vitamin K2 and its novel intermediates
发明人：MEHTA DILIP; SHASHTRI MAYANK; RAJU BNS; SHAH ASHWIN; VORA PARIN; MAHALE UMAKANT
权利人:SYNERGIA LIFE SCIENCES PVT LTD
摘要:The present disclosure relates to a novel process for the synthesis of stereospecific compounds of Vitamin K2 group in general and Vitamin K2-7. The present disclosure further discloses novel intermediates useful in the synthesis of stereospecific Vitamin K2-7. Compounds of the Vitamin K2 group obtained are crystalline and exhibit well defined melting points.

专利号:WO-2023031841-A1
优先权日:2021-09-03
标题:A process for the stereospecific synthesis of vitamin k2 and its intermediates
发明人：MEHTA DILIP; SHASHTRI MAYANK; RAJU BNS; VORA PARIN; MAHALE UMAKANT
权利人:SYNERGIA LIFE SCIENCES PVT LTD
摘要:The present disclosure relates to a novel process for the synthesis of stereospecific compounds of Vitamin K2 group in general and Vitamin K2-7, in particular. It also discloses novel intermediates useful in the synthesis of stereospecific Vitamin K2-7. Compounds of the Vitamin K2 group obtained are crystalline and exhibit well defined melting points.

专利号:US-4451565-A
优先权日:1981-03-10
标 题:Enzyme-mediated synthesis of esters and lactones
发明人：GATFIELD IAN; SAND THEODOR
权利人:HAARMANN & REIMER GMBH
摘要:In the enzyme-mediated synthesis of an ester or lactone from at least one carboxylic acid of the formula R-CH2-CH2-COOH wherein R is a hydrogen atom, or a hydrocarbon radical which has 1 to 21 carbon atoms and which can be optionally substituted by hydroxyl groups or alkoxy groups with 1 to 10 carbon atoms, with at least one primary or secondary alcohol having 1 to 15 carbon atoms, the improvement which comprises employing as the enzyme the esterase from Mucor miehei and effecting the synthesis in the absence of water. Advantageously, the synthesis is effected at about room temperature, the mol ratio of carboxylic acid to alcohol is from about 1:1 to 1:1.1, and the enzyme is used in a quantity of about 3 to 20% by weight of the carboxylic acid. The absence of water facilitates recovery, as by distillation.

专利号:WO-2024013633-A1
优先权日:2022-07-11
标 题 :Process for the synthesis of vitamin k2
发明人：SHASTRI MAYANK; BAIKAR MRUNALI H; VORA PARIN K; BNS RAJU
权利人:SYNERGIA LIFE SCIENCES PVT LTD
摘要:The present disclosure relates to the synthesis of Vitamin K2 bearing varying prenyl side chains. The synthesis comprises the reaction of phenyl sulfone of tert-butyl dimethyl silyl (TBDMS) protected mono prenyl menadiol with prenyl halides bearing varying prenyl units in the presence of the phase transfer catalyst followed by reductive desulphonation to yield TBDMS ether of Vitamin K2. The TBDMS ether is then oxidized in the presence of chromium trioxide and periodic acid to yield the corresponding Vitamin K2.

专利号:US-11046978-B2
优先权日:2016-03-16
标 题:Synthesis of isoprenoids and derivatives
发明人：GONZALEZ RAMON; CLOMBURG JAMES M; CHEONG SEOKJUNG
权利人:UNIV RICE WILLIAM M
摘要:This disclosure generally relates to the use of enzyme combinations or recombinant microbes comprising same to make isoprenoid precursors, isoprenoids and derivatives thereof including prenylated aromatic compounds. Novel metabolic pathways exploiting Claisen, aldol, and acyioin condensations are used instead of the natural mevalonate (MVA) pathway or 1-deoxy-d-xylulose 5-phosphate (DXP) pathways for generating isoprenoid precursors such as isopentenyl pyrophosphate (IPP), dimethylallyl pyrophosphate (DMAPP), and geranyl pyrophosphate (GPP). These pathways have the potential for better carbon and or energy efficiency than native pathways. Both decarboxylative and non-carboxylative condensations are utilized, enabling product synthesis from a number of different starting compounds. These condensation reactions serve as a platform for the synthesis of isoprenoid precursors when utilized in combination with a variety of metabolic pathways and enzymes for carbon rearrangement and the addition/removal of functional groups. Isoprenoid alcohols are key intermediary products for the production of isoprenoid precursors in these novel synthetic metabolic pathways.