Chemical & pharmaceutical bulletin最新文献_第10页

Effect of Noise Filtering in an Ultraviolet Detector of UHPLC on the Statistical Reliability of Chemometrically Evaluated Repeatability. 超高效液相色谱紫外检测器中的噪声滤波对化学计量学评估重复性统计可靠性的影响

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c24-00393

Akira Kotani, Koichi Machida, Ryo Watanabe, Hideki Hakamata

{"title":"Effect of Noise Filtering in an Ultraviolet Detector of UHPLC on the Statistical Reliability of Chemometrically Evaluated Repeatability.","authors":"Akira Kotani, Koichi Machida, Ryo Watanabe, Hideki Hakamata","doi":"10.1248/cpb.c24-00393","DOIUrl":"https://doi.org/10.1248/cpb.c24-00393","url":null,"abstract":"A noise filter, which is usually attached to a detector for chromatography, was applied for the improvement of a signal-to-noise ratio (S/N) on a chromatogram. The objective of this paper is to elucidate the effect of noise filtering in an UV detector of ultra HPLC (UHPLC) on the statistical reliability of chemometrically evaluated repeatability by the function of mutual information (FUMI) theory. To examine the statistical reliability of chemometrically evaluated repeatability in the UHPLC system associated with noise filtering, the standard deviation (SD) values of the area in baseline fluctuations with peak region k (s(k)) were obtained from six chromatograms with noise filtering. Further, the average of s(k) values (σ̂) was calculated from the s(k) values (n = 6) to be alternatively applied as the population SD. All s(k)/σ̂ values were within the 95% confidence intervals (CIs) at the freedom degree of 50, indicating the chemometrically estimated relative SD (RSD) of a peak area and RSD by repeated measurements of at least 50 times had equivalent reliability.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"72 9","pages":"800-803"},"PeriodicalIF":1.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142131932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

8-Iodoisoquinolinone, a Conformationally Rigid Highly Reactive 2-Iodobenzamide Catalyst for the Oxidation of Alcohols by Hypervalent Iodine. 8-碘异喹啉酮--一种构象刚性高活性 2-碘苯甲酰胺催化剂，用于高价碘氧化醇。

IF 1.7 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c23-00887

Takayuki Yakura, Tomoya Fujiwara, Kanna Asakubo, Hema Naga Lakshmi Perumalla, Mitsuha Uzu, Takashi Okitsu, Kengo Kasama, Hisanori Nambu

引用次数: 0

Study of Palladium-Catalyzed Site and Regioselective Reductive Heck Hydroarylation of Unactivated Alkene. 钯催化未活化烯的位点和区域选择性还原赫克加氢反应研究。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c24-00431

Takahiro Shirai, Ryo Nakajima, Takuya Kumamoto

引用次数: 0

Development of Methodologies toward the Unified Synthesis of Ellagitannins. 开发鞣花丹宁统一合成方法。

IF 1.7 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c23-00920

Kazutada Ikeuchi

引用次数: 0

Triboelectrification of Active Pharmaceutical Ingredients: Amines and Their Hydrochloride Salts. 活性药物成分的三电化：胺及其盐酸盐。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c24-00303

Kenta Fujinuma, Shota Okada, Kyu Hayashi, Masataka Ito, Hironori Suzuki, Kiyohiko Sugano, Shuji Noguchi

{"title":"Triboelectrification of Active Pharmaceutical Ingredients: Amines and Their Hydrochloride Salts.","authors":"Kenta Fujinuma, Shota Okada, Kyu Hayashi, Masataka Ito, Hironori Suzuki, Kiyohiko Sugano, Shuji Noguchi","doi":"10.1248/cpb.c24-00303","DOIUrl":"10.1248/cpb.c24-00303","url":null,"abstract":"The triboelectric properties of active pharmaceutical ingredients (APIs) contribute to problems during the manufacturing of pharmaceuticals. However, the triboelectric properties of APIs have not been comprehensively characterized. In this study, the effect of salt formulation on the triboelectric properties of APIs was investigated. The triboelectric properties of three groups of amines, namely tertiary amines, purine bases, and amino acids, and their hydrochlorides were evaluated using a suction-type Faraday cage meter. Most of the hydrochloride salts exhibited more negative charges than the corresponding free bases, and the degree by which the triboelectric property changed upon hydrochlorination depended on the structural groups of the compounds. In the case of tertiary amines, the change in the zero-charge margin upon hydrochlorination was negatively correlated with the zero-charge margin of the free base. In contrast, hydrochlorination of the amino acids led to a significant change in the zero-charge margin. In most cases, salt formation also affected the triboelectric properties of API powders. Controlling the triboelectric properties of APIs solves various problems caused by the electrification of raw material powders and granules during the production of pharmaceuticals, thereby increasing the quality of produced pharmaceuticals.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"72 9","pages":"817-825"},"PeriodicalIF":1.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142307195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of Novel Pseudo-Enantiomeric Phase-Transfer Catalysts from Cinchona Alkaloids and Application to the Hydrolytic Dynamic Kinetic Resolution of Racemic 3-Phenyl-2-oxetanone. 从金鸡纳生物碱中合成新型假对映异构相转移催化剂并将其应用于外消旋 3-苯基-2-氧杂环丁酮的水解动态动力学解析。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c24-00406

Midori Kawasaki, Takahiro Shirai, Kenji Yatsuzuka, Ryuichi Shirai

{"title":"Synthesis of Novel Pseudo-Enantiomeric Phase-Transfer Catalysts from Cinchona Alkaloids and Application to the Hydrolytic Dynamic Kinetic Resolution of Racemic 3-Phenyl-2-oxetanone.","authors":"Midori Kawasaki, Takahiro Shirai, Kenji Yatsuzuka, Ryuichi Shirai","doi":"10.1248/cpb.c24-00406","DOIUrl":"https://doi.org/10.1248/cpb.c24-00406","url":null,"abstract":"Naturally occurring Cinchona alkaloids such as quinidine (QD)/cinchonine (CN) and their diastereomers, quinine (QN)/cinchonidine (CD), have been recognized as pseudo-enantiomeric pairs. Utilizing these pseudo-enantiomeric alkaloids as chiral resources provides complementary enantioselectivity in many asymmetric reactions. During the screening of Cinchona alkaloid phase-transfer catalysts (PTCs) in the hydrolytic dynamic kinetic resolution of racemic 3-phenyl-2-oxetanone (1) to tropic acid (2), we found that the introduction of a 4-trifluoromethylphenyl group at the vinyl terminus of BnQN significantly reduced the enantioselectivity to 41% enantiomeric excess (ee). The optimized structure of tetrahedral intermediates (TI, PTC + 1 + OH-) of hydrolysis obtained by density functional theory (DFT) calculations shows that the orientation of the quinoline and benzene rings of QD class PTC are nearly parallel to each other and to construct a greatly extended π-electron cloud surface, allowing good π-π interaction with the benzene ring of 1.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"72 10","pages":"913-916"},"PeriodicalIF":1.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142495978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Astragaloside IV Inhibits the Pyroptosis in the Acute Kidney Injury through Targeting the SIRT1/FOXO3a Axis. 黄芪皂苷 IV 通过靶向 SIRT1/FOXO3a 轴抑制急性肾损伤中的脓毒症

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c24-00151

Chengxi Zha, Yaya Qi, Fujun Xing, Jiansheng Li

{"title":"Astragaloside IV Inhibits the Pyroptosis in the Acute Kidney Injury through Targeting the SIRT1/FOXO3a Axis.","authors":"Chengxi Zha, Yaya Qi, Fujun Xing, Jiansheng Li","doi":"10.1248/cpb.c24-00151","DOIUrl":"https://doi.org/10.1248/cpb.c24-00151","url":null,"abstract":"Acute kidney injury (AKI) is a commonly encountered critical condition in clinical settings, often resulting from sepsis, infections or ischemia. Astragaloside IV (AS-IV) is the primary active component of Astragalus. The functions of Astragalus are mainly related to AS-IV, showing remarkable therapeutic effects in anti-inflammatory, antioxidant, immune-enhancing, and anti-tumor aspects. This study aimed to explore the role of AS-IV in AKI development. Lipopolysaccharide (LPS) was used to stimulate the HK-2 cells and rats to establish the AKI model in vivo and in vitro. After AS-IV treatment, the cell viability, pyroptosis rate, lactate dehydrogenase (LDH) activity, interleukin (IL)-18 and IL-1β contents, and cleaved-caspase-1, GSDMD-N, SIRT, FOXO3a protein levels were detected. Caspase-1 levels were analyzed by immunofluorescence staining. Additionallly, the acetylation levels of FOXO3a were detected by immunoprecipitation and Western blot assays. AS-IV treatment promoted the cell viability, and inhibited the pyroptosis, LDH activity, caspase-1 levels in the LPS stimulated HK-2 cells. AS-IV treatment decreased the IL-18 and IL-1β contents, cleaved-caspase-1 and GSDMD-N protein levels in both LPS stimulated HK-2 cells and rats. Furthermore, after EX527 treatment, a Sirtuin 1 (SIRT1) inhibitor, the role of AS-IV in the LPS stimulated HK-2 cells were reversed. AS-IV treatment increased the protein levels and decreased the acetylation levels of FOXO3a, which was reversed after EX527 treatment. Co-immunoprecipitation (CO-IP) assay and immunofluorescence staining confirmed that SIRT1 interacted with FOXO3a. In conclusion, this research demonstrated that AS-IV treatment inhibited the pyroptosis occurrence in LPS stimulated HK-2 cells and rats. This may be related to the SIRT1 mediated deacetylation of FOXO3a.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"72 10","pages":"923-931"},"PeriodicalIF":1.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142543938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of 2-Substituted Indoles via Migration Reaction of 3-Substituted Indoles with Triflic Acid. 通过 3-取代吲哚与三氟丙酸的迁移反应合成 2-取代吲哚。

IF 1.7 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c23-00792

Kosuke Nakashima, Yuka Kudo, Yasuyuki Matsushima, Shin-Ichi Hirashima, Tsuyoshi Miura

引用次数: 0

Magnetic Polystyrene Nanoparticles Prepared by Emulsion Solvent-Evaporation for the Chemiluminescent Immunoassay. 用乳液溶剂蒸发法制备用于化学发光免疫测定的磁性聚苯乙烯纳米粒子

IF 1.7 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c23-00864

Hiroaki Ichimaru, Masashi Kurimoto, Shigetoshi Kikuchi

引用次数: 0

Sulfonate Derivatives Containing a Kakuol Moiety as Potential Fungicidal Candidates: Design, Synthesis and Antifungal Activity Evaluation. 含 Kakuol 分子的磺酸盐衍生物作为潜在的杀真菌候选化合物：设计、合成和抗真菌活性评估。

IF 1.7 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2024-01-01 DOI: 10.1248/cpb.c23-00857

Guoqing Sui, Lili Shu, Ailing Zhang, Dan Li, Shuhua Cao

引用次数: 0