Process for producing hexahydrofurofuranol derivative
申请人:Ikemoto Tetsuya
公开号:US20090176999A1
公开(公告)日:2009-07-09
The present invention provides; a process for producing a compound (IV) comprising a step of reacting a compound (I) with a compound (II) in the presence of an optionally substituted cyclic secondary amine to obtain a compound (III) and a step of sequentially or simultaneously eliminating R
1
and R
2
from the compound (III), and then cyclizing the R
1
- and R
2
-eliminated compound to obtain the compound represented by the formula (IV); a process for producing a high purity compound (IV); an intermediate thereof; and a process for producing an intermediate.
METHOD FOR PRODUCING HEXAHYDROFUROFURANOL DERIVATIVE
申请人:Sumitomo Chemical Company, Limited
公开号:EP1889826A1
公开(公告)日:2008-02-20
The present invention provides; a process for producing a compound (IV) comprising a step of reacting a compound (I) with a compound (II) in the presence of an optionally substituted cyclic secondary amine to obtain a compound (III) and a step of sequentially or simultaneously eliminating R1 and R2 from the compound (III), and then cyclizing the R1- and R2-eliminated compound to obtain the compound represented by the formula (IV); a process for producing a high purity compound (IV); an intermediate thereof; and a process for producing an intermediate.
A sulfonate represented by formula (7):
that is useful as a precursor for a chemotherapeutic medicament can be produced by a method for producing the sulfonate represented by formula (7) which comprises a step of reacting a sulfonic acid ester represented by formula (6):
wherein R1 represents a C4 to C6 branched alkyl group,
with sodium iodide or sodium hydroxide to obtain the sulfonate represented by formula (7).
Maytansinoid derivatives, conjugates thereof, and methods of use
申请人:Regeneron Pharmaceuticals, Inc.
公开号:US11446389B2
公开(公告)日:2022-09-20
Provided herein are maytansinoid compounds, derivatives thereof, conjugates thereof, and methods of treating or preventing proliferative diseases with the same.