从丝裂霉素A合成了多种丝裂霉素C类似物,并对其生物学活性进行了研究。丝裂霉素A(1)进行了亲核置换反应,涉及用带有流动氢的氮亲核试剂处理后分子内氢迁移,但是氢迁移的方式取决于亲核试剂的性质。与烷氧基胺的反应得到化合物6和7,它们在1的环A中具有5 H -6-烷氧基亚氨基-4,7-二酮结构。然而,与羟胺和苯甲酰肼的反应得到化合物11和13它们在1的环A中分别具有4-羟基-6-羟基亚氨基-7-结构和4-羟基-6-肼基-7-结构。通过用甲基碘或硫酸二甲酯进行甲基化,将这些产物转化为各种类型的丝裂霉素C衍生物。讨论了这些反应的机理特征。在体外和体内的生物活性,通过使用P388白血病和肉瘤180肿瘤细胞进行试验。几种合成的化合物显示出比丝裂霉素C更好的活性。
Synthesis and Fungicidal Activity of Macrolactams and Macrolactones with an Oxime Ether Side Chain
摘要:
Three series of novel macrolactams and macrolactones - 12-alkoxyimino-tetradecanlactam, 12-alkoxyiminopentadecanlactam, and 12-alkoxyiminodecanlactone derivatives (7A, 7B, and 7C) - were synthesized from corresponding 12-oxomacrolactams and 12-oxomacrolactone. Their structures were confirmed by H-1 NMR and elemental analysis. The Z and E isomers of 7A and 7B were separated, and their configurations were determined by H-1 NMR. These compounds showed fair to excellent fungicidal activities against Rhizoctonia solani Kuhn. It is interesting that the Z and E isomers of most of the compounds have quite different fungicidal activities. The fact that the compounds have a gradual increase of fungicidal activity in the order of 7A, 7C, and 7B indicated that the macrocyclic derivatives with a hydrogen-bonding acceptor (=N-O-) and a hydrogen-bonding donor (-CONH-) on the ring, and a three methylenes distance (CH2CH2CH2) between these two functional groups, exhibited the best fungicidal activity. The bioassay also showed that 7B not only has good fungicidal activity but also may have a broad spectrum of fungicidal activities.
6-O-SUBSTITUTED BENZOXAZOLE AND BENZOTHIAZOLE COMPOUNDS AND METHODS OF INHIBITING CSF-1R SIGNALING
申请人:Sutton C James
公开号:US20080045528A1
公开(公告)日:2008-02-21
Benzoxazole and benzothiazole compounds and the stereoisomers, tautomers, solvates, oxides, esters, and prodrugs thereof and pharmaceutically acceptable salts thereof are disclosed. Compositions of the compounds, either alone or in combination with at least one additional therapeutic agent, with a pharmaceutically acceptable carrier, and uses of the compounds, either alone or in combination with at least one additional therapeutic agent are also disclosed. The embodiments are useful for inhibiting cellular proliferation, inhibiting the growth and/or metathesis of tumors, treating or preventing cancer, treating or preventing degenerating bone diseases such as rheumatoid arthritis, and/or inhibiting molecules such as CSF-1R.
The present invention provides a fused heterocyclic derivative having a potent kinase inhibitory activity and use thereof.
A compound represented by the formula (I):
wherein each symbol is as defined in the specification, except a particular compound, or a salt thereof, and a pharmaceutical agent containing the compound or a prodrug thereof, which is a kinase (VEGFR, VEGFR2, PDGFR, Raf) inhibitor, an angiogenesis inhibitor, an agent for the prophylaxis or treatment of cancer, a cancer growth inhibitor or a cancer metastasis suppressor.
Tandem Functionalization in a Highly Branched Polymer with Layered Structure
作者:Xiaosong Cao、Yi Shi、Weiping Gan、Haifeng Gao
DOI:10.1002/chem.201800683
日期:2018.4.17
hyperbranched polymer with multilayer structure was developed to demonstrate the possibility of highly efficient tandem functionalization reactions at different domains within one nanostructured platform. The polymer scaffold was constructed by chain‐growth copper‐catalyzed azide–alkyne cycloaddition polymerization of three functional monomers with sequential monomer addition in one pot. Subsequent reactions
There is provided a combination product comprising: (1) a compound of claim 1 in WO 02/44145 or a compound of claim 20 in WO 02/44145 (or derivative thereof)or a pharmaceutically-acceptable derivative thereof; and (1) a compound as defined in claim 1 of WO 01/28992 or (2) a compound of Claim 34 of WO 01/28992 or (3) Compound A or B or C or D (or pharmaceutically-acceptable salts thereof) for use in treating arrhythmia or a coagulation controlled complication thereof.
提供了一种组合产品,包括:(1) WO 02/44145中权利要求1的化合物或WO 02/44145中权利要求20的化合物(或其衍生物)或药用可接受的衍生物;以及(1)WO 01/28992中权利要求1定义的化合物或(2)WO 01/28992中权利要求34的化合物或(3)化合物A或B或C或D(或药用可接受的盐)用于治疗心律不齐或其凝血控制的并发症。
Electrodimerization of <i>N</i>-Alkoxyamides for the Synthesis of Hydrazines
作者:Abudulajiang Nasier、Xihao Chang、Chang Guo
DOI:10.1021/acs.joc.1c01294
日期:2021.11.19
wide range of advanced, highly functionalized hydrazines. Remarkably, an N-centered radical generated from the cleavage of the N–H bond under electrolytic conditions plays a crucial role in this transformation. Furthermore, various N-alkoxyamides bearing different substituents are suitable in this transformation, furnishing the corresponding hydrazines in up to 92% yield.