(E)-4-carboxystyrl-4-chlorobenzyl sulfone and pharmaceutical compositions thereof
申请人:——
公开号:US20030149109A1
公开(公告)日:2003-08-07
Pre-treatment with &agr;,&bgr; unsaturated aryl sulfones protects normal cells from the cytotoxic side effects of two classes of anticancer chemotherapeutics. Administration of a cytoprotective sulfone compound to a patient prior to anticancer chemotherapy with a mitotic phase cell cycle inhibitor or topoisomerase inhibitor reduces or eliminates the cytotoxic side effects of the anticancer agent on normal cells. The cytoprotective effect of the &agr;,&bgr; unsaturated aryl sulfone allows the clinician to safely increasing the dosage of the anticancer chemotherapeutic.
Styryl sulfone compounds of the invention selectively inhibit proliferation of tumor cells, and induce apoptosis of tumor cells, while sparing normal cells. The compounds, which are useful in the treatment of cancer and other proliferative disorders, have
(a) the formula II:
1
wherein
n is zero or one;
R
1
is selected from the group consisting of hydrogen, chlorine, fluorine and bromine;
R
2
is selected from the group consisting of hydrogen, chlorine, fluorine, bromine, methyl and methoxy; and
R
3
is selected from the group consisting of hydrogen, chlorine and fluorine; provided,
R
2
may not be methyl or methoxy when R
1
and R
3
are both hydrogen and n is zero or one; and
R
1
, R
2
and R
3
may not all be hydrogen when n is one;
(b) the formula III:
2
wherein R
1
is selected from the group consisting of hydrogen, chlorine, fluorine and bromine; or
(c) or the formula IV:
3
wherein R
1
is selected from the group consisting of fluorine and bromine, and R
2
is selected from the group consisting of 2-chlorophenyl, 4-chlorophenyl, 4-fluorophenyl and 2-nitrophenyl.
本发明的苯乙烯基磺酰化合物选择性地抑制肿瘤细胞的增殖,并诱导肿瘤细胞凋亡,同时不损害正常细胞。这些化合物在治疗癌症和其他增殖性疾病中很有用,具有以下特征:
(a) 公式II:
1
其中
n 是零或一;
R
1
选自氢、氯、氟和溴的组;
R
2
选自氢、氯、氟、溴、甲基和甲氧基的组;和
R
3
选自氢、氯和氟的组;前提是,
当 R
1
和 R
3
都是氢且 n 是零或一时,R
2
不能是甲基或甲氧基;且
当 n 是一时,R
1
、R
2
和 R
3
不能都是氢;
(b) 公式III:
2
其中 R
1
选自氢、氯、氟和溴的组;或
(c) 公式IV:
3
其中 R
1
选自氟和溴的组,R
2
选自2-氯苯基、4-氯苯基、4-氟苯基和2-硝基苯基的组。
Revealing the metal-like behavior of iodine: an iodide-catalysed radical oxidative alkenylation
作者:Shan Tang、Yong Wu、Wenqing Liao、Ruopeng Bai、Chao Liu、Aiwen Lei
DOI:10.1039/c4cc00644e
日期:——
Catalytic HI elimination similar to the β-hydride elimination of transition metals was realized for the radical alkenylation of sulfonyl hydrazides.
类似于过渡金属的β-氢化物消除反应,对磺酰基肼的自由基烯基化实现了催化HI消除反应。
Silver-Catalyzed Denitrative Sulfonylation of β-Nitrostyrenes: A Convenient Approach to (<i>E</i>)-Vinyl Sulfones
作者:Twinkle Keshari、Ritu Kapoorr、Lal Dhar S. Yadav
DOI:10.1002/ejoc.201600237
日期:2016.5
(readily available by the Henry reaction) for a highly stereoselective, convenient, and catalytic synthesis of (E)-vinyl sulfones at room temperature was investigated. The protocol involves efficient silver-catalyzed denitrative radical cross-coupling of β-nitrostyrenes and sodium sulfinates by using potassium persulfate as an additive to complete the catalytic cycle.
An efficient Mn(III)-mediated coupling reaction of sodium sulfinates with nitro-olefins has been developed, this reaction proceeds in mild and open-flask conditions to afford (E)-vinylsulfones with high regioselectivities and in good to excellent yields. The control experiments revealed that this transformation could involve a radical process.