2-(2-Phenoxyphenylimino) imidazolidine and related compounds (IV and XII) were synthesized and evaluated for hypotensive activity in rats. Most of the 2-aryliminoimidazolidines (IV) were synthesized via the aniline derivatives (VI) by two different methods. Some imidazolidines (IV) were found to be significantly active, with 2-(5-chloro-2-phenoxyphenylimino) imidazolidine (IV-19) being more active than prazosin, the reference compound. The mechanism of action of IV-9 may involve the blockade of peripheral α-adrenergic receptors. This paper describes the synthesis, pharmacology, and structure-activity relationships of the 2-(2-phenoxyphenylimino) imidazolidines.
Antiapoptotic Bcl‐2 familyproteins, such as Bcl‐xL, Bcl‐2, and Mcl‐1, are often overexpressed in tumor cells, which contributes to tumor cell resistance to chemotherapies and radiotherapies. Inhibitors of these proteins thus have potential applications in cancer treatment. We discovered, through structure‐based virtual screening, a lead compound with micromolar binding affinity to Mcl‐1 (inhibition
afford a series of biologically potent fused seven-membered (6–7–6) ring compounds under mild reaction conditions. This reaction was believed to proceed through Friedel–Crafts type sequential carbometallation followed by protonation to produce phenyldibenz[b,f]oxepines. This method was also extended to synthesize seven-membered rings that are fused with coumarins.
COMPOUND AND ORGANIC ELECTRONIC DEVICE USING THE SAME
申请人:NICHEM FINE TECHNOLOGY CO., LTD.
公开号:US20180155312A1
公开(公告)日:2018-06-07
Provided are a novel compound and an organic electronic device using the same. The novel corn pound is represented by the following Formula (I):
wherein Y is an oxygen atom, a sulfur atom, or a sulfur dioxide group; X
1
and X
2
are each independently C(R
a
), multiple (R
a
)s are the same or different, and the two (R
a
)s are joined together to form a first aryl ring; X
3
and X
4
are each independently C(R
b
), multiple (R
b
)s are the same or different, and the two (R
b
)s are joined to form a second aryl ring or a heteroaryl ring.
NMR and DFT studies on persistent carbocations derived from benzo[<i>kl</i>
]xanthene, dibenzo[<i>d</i>
,<i>d</i>
′]benzo[1,2-<i>b</i>
:4,3-<i>b</i>
′]difuran, and dibenzo[<i>d</i>
,<i>d</i>
′]benzo[1,2-<i>b</i>
:4,5-<i>b</i>
′]difuran in superacidic media
carbocations generated by the protonation of hetero‐polycyclic aromaticcompounds with oxygen atom(s) were studied by experimental NMR and density function theory calculations. Benzo[kl]xanthene (1), dibenzo[d,d′]benzo[1,2‐b:4,3‐b′]difuran (2), and dibenzo[d,d′]benzo[1,2‐b:4,5‐b′]difuran (3) were synthesized by the annulation of arenediazonium salts. Compound 1 in FSO3H‐SbF5 (4:1)/SO2ClF and 3 in FSO3H‐SbF5 (1:1)/SO2ClF
通过实验NMR和密度函数理论计算研究了杂多环芳族化合物与氧原子质子化产生的持久碳阳离子。苯并[ kl ]吨蒽(1),二苯并[ d,d ']苯并[1,2- b:4,3- b ']二呋喃(2)和二苯并[ d,d ']苯并[1,2- b:4,5- b ']二呋喃(3)是通过芳构氮鎓盐的环化反应合成的。FSO 3 H-SbF 5(4:1)/ SO 2 ClF和3中的化合物1在FSO 3 H-的SbF 5(1:1)/ SO 2的ClF电离以1AH +与质子化在C(4)和四氢-3aH- +与质子化在C(6),以及这些阳离子被成功通过NMR在低温下观察到。密度泛函理论计算表明,1aH +和3aH +是最稳定的质子化碳正离子,2应当在C(6)质子化下电离为2aH +。根据在变化13个c。化学位移(Δδ 13 C)中,正电荷被离域到用于萘单元1AH+,为一个苯并[ b, d ]呋喃单元2AH +,并进入一个苯并[