US 12,458,701 B2
Bis (hydroxy benzylidene) cyclic ketone based tetra-aza corand
Arpita Desai, Gujarat (IN); and Priyanka Mathur, Gujarat (IN)
Appl. No. 17/639,918
Filed by Arpita Desai, Gujarat (IN); and Priyanka Mathur, Gujarat (IN)
PCT Filed Oct. 6, 2021, PCT No. PCT/IN2021/050960
§ 371(c)(1), (2) Date Mar. 3, 2022,
PCT Pub. No. WO2022/074673, PCT Pub. Date Apr. 14, 2022.
Claims priority of application No. 202021043486 (IN), filed on Oct. 6, 2020.
Prior Publication US 2023/0226194 A1, Jul. 20, 2023
Int. Cl. C07D 487/22 (2006.01); A61K 47/54 (2017.01); C07D 257/10 (2006.01); C07D 487/18 (2006.01)
CPC A61K 47/545 (2017.08) [C07D 257/10 (2013.01); C07D 487/18 (2013.01); C07D 487/22 (2013.01)] 5 Claims
 
1. A tetra-aza corand compound of formula (Ia);

OG Complex Work Unit Chemistry
Wherein,
R1=—C1-C3 alkyl, —CH2NH—
R2=—H, —CF3, C1-C4 alkyl, Halogen, haloalkyl, alkoxy
R3=—H, C1-C10 alkyl,
R4=—C1-C3 alkyl.