Regioselectivity in the Palladium-Catalyzed Addition of Carbon Nucleophiles to Carbocyclic Derivatives
摘要:
The regioselectivity of Pd-catalyzed malonate additions and arylations to cycloalkenyl esters can be predicted by completing a stereochemical analysis of the Pd-pi-allyl complex. The Pd-catalyzed malonate additions which have the greatest degree of regioselectivity are in which substituents have a steric influence in blocking the incoming nucleophile. Cyclopentenyl substrates displayed lower regioselectivity than the cyclohexyl counterparts presumably due to increased planarity of the system. Arylations using tin and hypervalent silicon reagents were compared.
Heteroaryl compounds useful as inhibitors of E1 activating enzymes
申请人:Claiborne F. Christopher
公开号:US20080051404A1
公开(公告)日:2008-02-28
This invention relates to compounds that inhibit E1 activating enzymes, pharmaceutical compositions comprising the compounds, and methods of using the compounds. The compounds are useful for treating disorders, particularly cell proliferation disorders, including cancers, inflammatory and neurodegenerative disorders; and inflammation associated with infection and cachexia.
[EN] TARGETED PROTEIN DEGRADATION<br/>[FR] DÉGRADATION CIBLÉE DE PROTÉINES
申请人:C4 THERAPEUTICS INC
公开号:WO2020132561A1
公开(公告)日:2020-06-25
This invention provides pharmaceutical protein degraders and E3 ubiquitin ligase binders for therapeutic applications as described further herein.
这项发明提供了用于治疗应用的药用蛋白质降解剂和E3泛素连接酶结合物。
Inhibitors of E1 activating enzymes
申请人:Langston P. Steven
公开号:US20070191293A1
公开(公告)日:2007-08-16
This invention relates to compounds that inhibit E
1
activating enzymes, pharmaceutical compositions comprising the compounds, and methods of using the compounds. The compounds are useful for treating disorders, particularly cell proliferation disorders, including cancers, inflammatory and neurodegenerative disorders; and inflammation associated with infection and cachexia.
Total Synthesis of Prostratin, a Bioactive Tigliane Diterpenoid: Access to Multi-Stereocenter Cyclohexanes from a Phenol
作者:Guanghu Tong、Zhengwei Ding、Zhi Liu、You-Song Ding、Liang Xu、Hailong Zhang、Pengfei Li
DOI:10.1021/acs.joc.0c00022
日期:2020.4.3
Tiglianes such as prostratin and related diterpenoids are biologically significant natural molecules and long-standing targets for organic synthesis community. Due to the complexpolycyclic scaffolds, high oxygenation level, and dense functional groups and stereocenters, their de novo chemical syntheses still face formidable challenges despite extensive efforts in the past 40 years. This account details
作者:Jian Zhou、Minmin Yang、Akin Akdag、Haisheng Wang、Stewart W. Schneller
DOI:10.1016/j.tet.2007.10.054
日期:2008.1
Formycin is a naturally occurring biologically responsive C-nucleoside. In pursuing the design and syntheses of novel C-nucleosides, convenient access to carbocyclic C-nucleosides based on the formycin framework was a goal. One such target was carbocyclic 4'-epiformycin (4). This compound is reported via a procedure based on an asymmetric aldol/ring closure methathesis strategy. To provide a preliminary