发明名称 |
Process for preparation of 3-((2S,5S)-4-methylene-5-(3-oxopropyl)tetrahydrofuran-2-yl)propanol derivatives and intermediates useful thereof |
摘要 |
Discloses is a process for preparation of a compound of formula 7, or a derivative thereof, wherein PG1 is an alcohol protecting group. Also, disclosed are intermediates and processes for their preparation. The compound of formula 7 can be useful in the preparation of halinchondrin analogs such as Eribulin.; |
申请公布号 |
US9174956(B2) |
申请公布日期 |
2015.11.03 |
申请号 |
US201214365168 |
申请日期 |
2012.12.14 |
申请人 |
ALPHORA RESEARCH INC. |
发明人 |
Souza Fabio E. S.;Bexrud Jason A.;Orprecio Ricardo;Gorin Boris |
分类号 |
C07D493/04;C07D493/08;C07D493/10;C07D307/12;C07D307/20;C07D307/28 |
主分类号 |
C07D493/04 |
代理机构 |
Grossman, Tucker, Perrceault & Pfleger, PLLC |
代理人 |
Grossman, Tucker, Perrceault & Pfleger, PLLC |
主权项 |
1. A process for preparation of a compound of formula 7, or a derivative thereof, wherein PG1 is an alcohol protecting group, the process comprising: nucleophillic addition of an allyl-silane derivative of formula 8 to a compound of formula 4 to form the compound of formula 5; wherein R1 is a alcohol protecting group, and each R2, R3 and R4 independently is an alkyl, cyclo-alkyl, aryl or hetero-aryl group; deprotecting the compound of formula 5 under conditions to remove the R′ protecting group , and protecting the resulting aldehyde to form a compound of formula 6, wherein each R5 and R6 independently is an alkyl, cyclo-alkyl, aryl or hetero-aryl group, optionally having one or more heteroatoms, or R5 and R6 together form an alkanediyl group, optionally having one or more heteroatoms; replacing the hydroxyl group with a methylene group in the compound of formula 6, followed by deprotection of the protected aldehyde to form the compound of formula 7; |
地址 |
Mississauga CA |