Material Safety Data Sheet Section 1. Identification of the substance 2-Formylthiophene-4-boronic acid Product Name: Synonyms: 5-Formylthiophene-3-boronic acid; 2-Formyl-4-thiopheneboronic acid Section 2. Hazards identification Harmful by inhalation, in contact with skin, and if swallowed. H315: Causes skin irritation H319: Causes serious eye irritation H335: May cause respiratory irritation P261: Avoid breathing dust/fume/gas/mist/vapours/spray Wear protective gloves/protective clothing/eye protection/face protection P280: P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing P405: Store locked up Section 3. Composition/information on ingredients. 2-Formylthiophene-4-boronic acid Ingredient name: CAS number: 175592-59-3 Section 4. First aid measures Immediately wash skin with copious amounts of water for at least 15 minutes while removing Skin contact: contaminated clothing and shoes. If irritation persists, seek medical attention. Eye contact: Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical attention. Inhalation: Remove to fresh air. In severe cases or if symptoms persist, seek medical attention. Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention. Ingestion: Section 5. Fire fighting measures In the event of a fire involving this material, alone or in combination with other materials, use dry powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus should be worn. Section 6. Accidental release measures Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national standards. Respiratory precaution: Wear approved mask/respirator Hand precaution: Wear suitable gloves/gauntlets Skin protection: Wear suitable protective clothing Eye protection: Wear suitable eye protection Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container for disposal. See section 12. Environmental precautions: Do not allow material to enter drains or water courses. Section 7. Handling and storage Handling: This product should be handled only by, or under the close supervision of, those properly qualified in the handling and use of potentially hazardous chemicals, who should take into account the fire, health and chemical hazard data given on this sheet. Storage: Store in closed vessels, refrigerated. Section 8. Exposure Controls / Personal protection Engineering Controls: Use only in a chemical fume hood. Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles. General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse. Section 9. Physical and chemical properties Not specified Appearance: Boiling point: No data Melting point: No data Flash point: No data Density: No data Molecular formula: C5H5BO3S Molecular weight: 156.0 Section 10. Stability and reactivity Conditions to avoid: Heat, flames and sparks. Materials to avoid: Oxidizing agents. Possible hazardous combustion products: Carbon monoxide, sulfur oxides. Section 11. Toxicological information No data. Section 12. Ecological information No data. Section 13. Disposal consideration Arrange disposal as special waste, by licensed disposal company, in consultation with local waste disposal authority, in accordance with national and regional regulations. Section 14. Transportation information Non-harzardous for air and ground transportation. Section 15. Regulatory information No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302, or have known CAS numbers that exceed the threshold reporting levels established by SARA Title III, Section 313.
Discovery of the Macrocycle (9E)-15-(2-(Pyrrolidin-1-yl)ethoxy)-7,12,25-trioxa-19,21,24-triaza-tetracyclo[18.3.1.1(2,5).1(14,18)]hexacosa-1(24),2,4,9,14(26),15,17,20,22-nonaene (SB1578), a Potent Inhibitor of Janus Kinase 2/Fms-LikeTyrosine Kinase-3 (JAK2/FLT3) for the Treatment of Rheumatoid Arthritis
摘要:
Herein, we describe the synthesis and SAR of a series of small molecule macrocycles that selectively inhibit JAK2 kinase within the JAK family and FLT3 kinase. Following a multiparameter optimization of a key aryl ring of the previously described SB1518 (pacritinib), the highly soluble 141 was selected as the optimal compound. Oral efficacy in the murine collagen-induced arthritis (CIA) model for rheumatoid arthritis (RA) supported 141 as a potential treatment for autoimmune diseases and inflammatory disorders such as psoriasis and RA. Compound 141 (SB1578) was progressed into development and is currently undergoing phase 1 clinical trials in healthy volunteers.
Fe-Catalyzed Reductive Couplings of Terminal (Hetero)Aryl Alkenes and Alkyl Halides under Aqueous Micellar Conditions
作者:Haobo Pang、Ye Wang、Fabrice Gallou、Bruce H. Lipshutz
DOI:10.1021/jacs.9b04510
日期:2019.10.30
aromatic or heteroaromatic and an alkyl bromide or iodide leads, in the presence of Zn and a catalytic amount of an Fe(II) salt, to a net reductive coupling. The new C-C bond is regiospecifically formed at rt at the -site of the al-kene. The coupling only occurs in an aqueous micellar medium, where an atypical carbanionic, as opposed to radical, process is likely, supported by several control experiments
在Zn和催化量的Fe(II)盐的存在下,乙烯基取代的芳族或杂芳族和烷基溴或碘的组合导致净还原偶联。新的 CC 键在 rt 在烯烃的 位点区域特异性地形成。偶联仅发生在水性胶束介质中,其中可能是非典型的碳负离子过程,而不是自由基过程,这得到了几个控制实验的支持。提出了一种基于这些数据的机制。
[EN] HETEROARYL COMPOUNDS USEFUL AS INHIBITORS OF SUMO ACTIVATING ENZYME<br/>[FR] COMPOSÉS HÉTÉROARYLE UTILES EN TANT QU'INHIBITEURS DE L'ENZYME D'ACTIVATION SUMO
申请人:DUFFEY MATTHEW O
公开号:WO2016004136A1
公开(公告)日:2016-01-07
Disclosed are chemical entities which are compounds of formula (I); or pharmaceutically acceptable salts thereof; wherein Y, Ra, Ra', Rb, Rc, X1, X2, X3, Rd, Z1, and Z2 have the values described herein and stereochemical configurations depicted at asterisked positions indicate absolute stereochemistry. Chemical entities according to the disclosure can be useful as inhibitors of Sumo Activating Enzyme (SAE). Further provided are pharmaceutical compositions comprising a compound of the disclosure and methods of using the compositions in the treatment of proliferative, inflammatory, cardiovascular, and neurodegenerative diseases or disorders.
<sup>1</sup>
H, <sup>13</sup>
C, <sup>19</sup>
F and <sup>11</sup>
B NMR spectral reference data of some potassium organotrifluoroborates
作者:Roberta A. Oliveira、Ricardo O. Silva、Gary A. Molander、Paulo H. Menezes
DOI:10.1002/mrc.2467
日期:2009.10
Complete (1)H, (13)C, (19)F and (11)BNMRspectraldata for 28 potassiumorganotrifluoroborates are described. The resonance for the carbon bearing the boron atom is described for most of the studied compounds. A modified (11)BNMR pulse sequence was used and better resolution was observed allowing the observation of (11)B-(19)F coupling constants for some of the studied compounds.
6-O-Acyl ketolide antibacterials of the formula:
1
wherein R
1
, R
2
, R
3
, R
4
, W, X, X′, Y, and Y′ are as described herein and in which the substituents have the meaning indicated in the description. These compounds are useful as antibacterial agents.