CAS: 109-88-6; Magnesium Methoxide

上下游产品

methanol magnesium magnesium ethylate sodium methylateDimethyl ether 2,2,2-tribromoethanol bindone dichloroacetic acid methyl ester

专利信息

专利号:US-7943594-B2
优先权日:2002-07-10
标 题 :Solid-phase and solution-phase synthesis of glycosylphosphatidylinositol glycans
发明人：SEEBERGER PETER H; HEWITT MICHAEL C; SNYDER DANIEL A
权利人:MASSACHUSETTS INST TECHNOLOGY
摘要:One aspect of the present invention relates to solution-phase approaches to GPI synthesis. Another aspect of the present invention relates to key building blocks, and syntheses thereof, useful for GPI assembly. Yet another aspect of the invention relates to an automated method for the synthesis of GPIs and fragments thereof.

专利号:US-10913749-B2
优先权日:2015-05-07
标 题 :Macrocyclization reactions and intermediates and other fragments useful in the synthesis of halichondrin macrolides
发明人：FANG FRANCIS G; KIM DAE-SHIK; CHOI HYEONG-WOOK; CHASE CHARLES E
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods for the synthesis of a halichondrin macrolides through a macrocyclization strategy. The macrocyclization strategy of the present invention involves subjecting a non-macrocyclic intermediate to a carbon-carbon bond-forming reaction (e.g., an olefination reaction (e.g., Horner-Wadsworth-Emmons olefination), catalytic Ring-Closing Olefin Metathesis, or Nozaki-Hiyama-Kishi reaction) to afford a macrocyclic macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.

专利号:US-11136335-B2
优先权日:2016-06-30
标题:Prins reaction and intermediates useful in the synthesis of halichondrin macrolides and analogs thereof
发明人：CHASE CHARLES E; CHOI HYEONG-WOOK; ENDO ATSUSHI; FANG FRANCIS G; KIM DAE-SHIK
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods for the synthesis of a halichondrin macrolides or analogs thereof through a cyclization reaction strategy. The strategy of the present invention involves subjecting an intermediate to Prins reaction conditions to afford a macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides or analogs thereof and methods for preparing the same.

专利号:US-4870199-A
优先权日:1986-04-30
标题 :Processes for the synthesis of diprotected R[R*,S*]-3,5-dihydroxy-6-oxohexanoate esters
发明人：CHEN KAU-MING; HARDTMANN GOETZ E; KAPA PRASAD K; LEE GEORGE T; LINDER JEROME; WATTANASIN SOMPONG
权利人:SANDOZ PHARMACEUTICALS CORP
摘要:Process for the synthesis of compounds of the formula in R[R*,S*] enantiomeric form, wherein each P1 is independently an hydroxy group-protecting group, and R2z is C1-4alkyl, benzyl or allyl, comprising, as a key step when R2z is R2x, the reaction of the compound of the formula in (S) enantiomeric form with a compound of the formula Mg &cir& +2 ((-)OOC-CH2-COOR2x)2 to obtain a compound of the formula in (S) enantiomeric form, and, as a key step when R2z is R2y, the reaction of a compound of the formula in (S) enantioimeric form with a compound of the formula Li(+)(-)CH2-COOR2y to obtain a compound of the formula in (S) enantiomeric form, wherein R2x is primary or secondary C1-4alkyl, benzyl or allyl, R2y is C1-4alkyl not containing an asymmetric carbon atom, and R3' is methyl or ethyl, processes for the synthesis of compounds of the formula comprising reacting a compound of the formula with the reaction product of a strong base and a compound of the formula optionally followed by, when R2z is allyl, cleavage of the allyl and P1 groups to obtain the corresponding compound of the formula wherein each R7 is methyl or ethyl, R is as defined in the specification, and each P1 independently and R2z are as defined above, and the compounds of the formula wherein R and each R7 are as defined above.

专利号:US-11247977-B2
优先权日:2018-06-22
标题 :Compound and use thereof in synthesis of brivaracetam intermediate and crude drug
发明人：FENG YAN; WANG RUYONG; YE YIZHANG; ZHANG FENGSEN; GONG XUAN; WANG ZHONGHONG; KANG XINSHAN
权利人:FUJIAN HAIXI PHARMACEUTICALS CO LTD
摘要:The present application provides a compound in formula III, and further provides a use of the compound in the synthesis of a Brivaracetam intermediate and a crude drug, and a synthesis method. A raw material involved in the method of the present application is low in costs and easily available; (R)-4-propyl-dihydrofuran-2-ketone having high optical purity can be prepared; complicated separation and purification steps are avoided; costs are reduced, and the method is more applicable to industrial production.

专利号:US-9783549-B2
优先权日:2013-11-04
标题:Macrocyclization reactions and intermediates useful in the synthesis of analogs of halichondrin B
发明人：FANG FRANCIS G; KIM DAE-SHIK; CHOI HYEONG-WOOK; CHASE CHARLES E; LEE JAEMOON
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods for the synthesis of eribulin or a pharmaceutically acceptable salt thereof (e.g., eribulin mesylate) through a macrocyclization strategy. The macrocyclization strategy of the present invention involves subjecting a non-macrocyclic intermediate to a carbon-carbon bond-forming reaction (e.g., an olefination reaction (e.g., Homer-Wadsworth-Emmons olefination), Dieckmann reaction, catalytic Ring-Closing Olefin Metathesis, or Nozaki-Hiyama-Kishi reaction) to afford a macrocyclic intermediate. The invention also provides compounds useful as intermediates in the synthesis of eribulin or a pharmaceutically acceptable salt thereof and methods for preparing the same.