85175-85-5Relevant articles and documents
Design of oxa-spirocyclic PHOX ligands for the asymmetric synthesis of lorcaserin: Via iridium-catalyzed asymmetric hydrogenation
Ye, Xiang-Yu,Liang, Zhi-Qin,Jin, Cong,Lang, Qi-Wei,Chen, Gen-Qiang,Zhang, Xumu
, p. 195 - 198 (2021/01/14)
Phosphine-oxazoline (PHOX) ligands are a very important class of privileged ligands in asymmetric catalysis. A series of highly rigid oxa-spiro phosphine-oxazoline (O-SIPHOX) ligands based on O-SPINOL was synthesized efficiently, and their iridium complexes were synthesized by coordination of the O-SIPHOX ligands to [Ir(cod)Cl]2 in the presence of sodium tetrakis-3,5-bis(trifluoromethyl)phenylborate (NaBArF). The cationic iridium complexes showed high reactivity and excellent enantioselectivity in the asymmetric hydrogenation of 1-methylene-tetrahydro-benzo[d]azepin-2-ones (up to 99% yield and up to 99% ee). A key intermediate of the anti-obesity drug lorcaserin could be efficiently synthesized using this protocol.
A new facile synthetic route to [11C]GSK189254, a selective PET radioligand for imaging of CNS histamine H3 receptor
Wang, Min,Gao, Mingzhang,Steele, Brandon L.,Glick-Wilson, Barbara E.,Brown-Proctor, Clive,Shekhar, Anantha,Hutchins, Gary D.,Zheng, Qi-Huang
, p. 4713 - 4718 (2012/08/13)
GSK189254 and its corresponding precursor GSK185071B were synthesized from 3-methoxyphenylacetic acid with 6-chloropyridine-3-carbolic acid or 6-chloronicotinamide in 8 and 7 steps with either 6% or 7% and either 14% or 16% yield, respectively. [11/
SELECTIVE ESTROGEN RECEPTOR MODULATORS
-
Page/Page column 123-124, (2008/06/13)
The present invention provides a compound represented by the following formula (I); [wherein T represents a single bond, a C1-C4 alkylene group which may have a substituent and the like; formula (I-1) represents a single bond or a double bond; A represents a single bond, a bivalent 5- to 14-membered heterocyclic group which may have a substituent and the like; Y represents a single bond and the like; Z represents a methylene group and the like; ring G represents a phenylene group and the like which may condense with a 5- to 6-membered ring and may have a heteroatom; Ra and Rb are the same as or different from each other and represent a hydrogen atom and the like; W represents a single bond and the like; R' represents 1 to 4 independent hydrogen atoms and the like; and R" represents 1 to 4 independent hydrogen atoms and the like] or a salt thereof, or a hydrate thereof.