Merging Halogen-Atom Transfer (XAT) and Copper Catalysis for the Modular Suzuki–Miyaura-Type Cross-Coupling of Alkyl Iodides and Organoborons
作者:Zhenhua Zhang、Bartosz Górski、Daniele Leonori
DOI:10.1021/jacs.1c12649
日期:2022.2.2
Suzuki–Miyaura-type cross-couplings between alkyl iodides and aryl organoborons. This process requires a copper catalyst but, in contrast with previous approaches based on palladium and nickel systems, does not utilizes the metal for the activation of the alkylelectrophile. Instead, this strategy exploits the halogen-atom-transfer ability of α-aminoalkyl radicals to convert secondary alkyl iodides into the
Cobalt‐Catalyzed α‐Arylation of Substituted α‐Bromo α‐Fluoro β‐Lactams with Diaryl Zinc Reagents: Generalization to Functionalized Bromo Derivatives
作者:Mélanie M. Lorion、Vanessa Koch、Martin Nieger、Hi‐Yung Chen、Aiwen Lei、Stefan Bräse、Janine Cossy
DOI:10.1002/chem.202001721
日期:2020.10.15
A cobalt‐catalyzed cross‐coupling of α‐bromo α‐fluoro β‐lactams with diarylzinc or diallylzinc reagents is herein disclosed. The protocol proved to be general, chemoselective and operationally simple allowing the C4 functionalization of β‐lactams. The substrate scope was expanded to α‐bromo lactams and amides, α‐bromo lactones and esters as well as N‐ and O‐containing heterocycles.
6-HYDROXY-4-OXO-1,4-DIHYDROPYRIMIDINE-5-CARBOXAMIDES AS APJ AGONISTS
申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:US20170275272A1
公开(公告)日:2017-09-28
The present invention provides compounds of Formula (I):
wherein all variables are as defined in the specification, and compositions comprising any of such novel compounds. These compounds are APJ agonists which may be used as medicaments.
A protocol for the cross-coupling of azetidines with aryl, heteroaryl, vinyl and alkyl Grignard reagents has been developed under iron catalysis. In addition, a short formal synthesis of a pharmacologically active molecule was demonstrated.
The present invention relates to novel N-substituted azetidine derivativesto pharmaceutical compositions comprising these compounds and to their use in therapy, in particular to their use for the prevention or treatment of ovulatory dysfunction, uterine cancer, endometrium cancer, ovarian cancer, endometriosis, osteoporosis, prostate cancer, benign prostatic hypertrophy, and breast cancer, in particular ER-positive breast cancer, more in particular ER-positive, hormone treatment-resistant breast cancer. Said N-substituted azetidine derivatives have estrogen receptor alpha (ERα) antagonistic and—in certain embodiments—selective estrogen receptor downregulating (SERD) activity in ER-positive breast cancer cells.