A process for the manufacture of aminocarbonyl boronic acids of formula (IV) by converting the compounds of formula (III) with a Brønsted base Y(OH)
n
in a solvent or a solvent mixture, in which Z represents an optionally substituted arylene, heteroarylene, alkene, heteroalkene, alkylidene, heteroalkylidene, alkenylidene, heteroalkenylidene, alkynylidene, arylalkylene, heteroarylalkylene, arylheteroalkylene, heteroarylheteroalkylene, alkylheteroarylene, heteroalkylheteroarylene, or alkylarylene group; Y represents a metal or ammonium cation of valence n with 0
一种通过将化合物的公式(III)与Brønsted碱Y(OH)在溶剂或溶剂混合物中转化为氨基羰基硼酸(IV)的制备方法,其中Z代表可选择取代的芳基、杂芳基、烯烃、杂烯烃、烷基亚烯、杂烷基亚烯、烯基亚烯、杂烯基亚烯、炔基亚烯、芳基烷基亚烯、杂芳基烷基亚烯、芳基杂烷基亚烯、杂芳基杂烷基亚烯、烷基杂芳基、杂烷基杂芳基或烷基芳基基团;Y代表价数为0
Regio-controllable [2+2] benzannulation with two adjacent C(sp
<sup>3</sup>
)–H bonds
作者:Ji-Min Yang、Yu-Kun Lin、Tao Sheng、Liang Hu、Xin-Pei Cai、Jin-Quan Yu
DOI:10.1126/science.adg5282
日期:2023.5.12
amide-pyridone ligands, to achieve a regio-controllable synthesis of BCBs through a formal [2+2] cycloaddition involving σ bonds only (two C–H bonds and two aryl–halogen bonds). A wide range of cyclic and acyclic aliphatic acids, as well as dihaloheteroarenes, are compatible, generating diversely functionalized BCBs and hetero-BCBs present in drug molecules and bioactive natural products.
不饱和碳化合物之间的传统环加成反应中的区域控制通常具有挑战性。现代药物化学对苯并环丁烯 (BCB) 支架的日益关注表明,需要寻找替代的、更具选择性的途径来制备富含 C(sp 3 ) 特点。在这里,我们报道了由二齿酰胺-吡啶酮配体实现的钯催化的羧酸中两个相邻亚甲基单元的双C-H活化,通过涉及σ的正式[2+2]环加成实现了BCB的区域可控合成。仅键(两个 C-H 键和两个芳基-卤素键)。多种环状和无环脂肪酸以及二卤杂芳烃是相容的,可生成药物分子和生物活性天然产物中存在的多种功能化的 BCB 和杂 BCB。
Synthesis and Biological Evaluation of Antimetastatic Agents Predicated upon Dihydromotuporamine C and Its Carbocyclic Derivatives
作者:Aaron Muth、Veethika Pandey、Navneet Kaur、Melissa Wason、Cheryl Baker、Xianlin Han、Teresa R. Johnson、Deborah A. Altomare、Otto Phanstiel
DOI:10.1021/jm401906v
日期:2014.5.22
The motuporamines isolated from the sea sponge Xestospongia exigua are of biological interest because of their unique antimigration and antiangiogenic properties. Key bioactive features were found to be a saturated 15-membered heterocycle and a norspermidine motif. This paper describes new analogues that modulate the cytotoxicity of this compound class and have enhanced antimigration properties. By movement of the polyamine chain outside the ring, new carbocycles were discovered that doubled the antimigration potency and reduced compound toxicity by 133-fold. Mice injected with metastatic human L3.6pl pancreatic cancer cells demonstrated significant reduction in liver metastases when treated with N-1-(3-aminopropyl)-N-3-(cyclopentadecylmethyl)propane-1,3-diamine compared with dihydromotuporamine C. Significant changes in specific ceramide populations (N16:0 and N22:1) were noted in L3.6pl cells treated with dihydromotuporamine C but not for the cyclopentadecylmethylnorspermidine derivative, which had lower toxicity. Both compounds gave increased levels of specific low molecular weight sphingomyelins, suggesting that they may act upon sphingomyelin processing enzymes.
NOKAMI JUNZO; MATSUURA NOBUYOSHI; SUEOKA TATSUFUMI; KUSUMOTO YOSHIHISA; K+, CHEM. LETT., 1978, NO 11, 1283-1284
作者:NOKAMI JUNZO、 MATSUURA NOBUYOSHI、 SUEOKA TATSUFUMI、 KUSUMOTO YOSHIHISA、 K+
DOI:——
日期:——
RESIST COMPOSITION AND PATTERNING PROCESS
申请人:Hatakeyama Jun
公开号:US20120202153A1
公开(公告)日:2012-08-09
A resist composition comprising a polymer having recurring units having an acid labile group and recurring units of a magnesium, copper, zinc or cesium salt of (meth)acrylic acid, styrenecarboxylic acid or vinylnaphthalenecarboxylic acid copolymerized together exhibits a high resolution, high sensitivity, and minimal LER. The resist composition is best suited as the patterning material for VLSIs and photomasks.
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