Chemical & pharmaceutical bulletin最新文献_第2页

Methylene Blue Removal from the Aqueous Phase Using a Magnetic-Calcined Bamboo Composite Adsorbent. 磁焙烧竹复合吸附剂去除水相亚甲基蓝的研究。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c24-00648

Fumihiko Ogata, Kazuya Ujita, Yugo Uematsu, Noriaki Nagai, Chalermpong Saenjum, Shigeharu Tanei, Naohito Kawasaki

{"title":"Methylene Blue Removal from the Aqueous Phase Using a Magnetic-Calcined Bamboo Composite Adsorbent.","authors":"Fumihiko Ogata, Kazuya Ujita, Yugo Uematsu, Noriaki Nagai, Chalermpong Saenjum, Shigeharu Tanei, Naohito Kawasaki","doi":"10.1248/cpb.c24-00648","DOIUrl":"10.1248/cpb.c24-00648","url":null,"abstract":"In the present study, magnetic-calcined bamboo composite adsorbents (MCBC200, MCBC400, MCBC600, MCBC800, and MCBC1000) were prepared, and their physicochemical characteristics (scanning electron microscope images, differential thermogravimetric analysis, Fourier transform-IR, specific surface area, surface functional groups, and point of zero charge [pHpzc]) were evaluated. Furthermore, the adsorption capacity of methylene blue (MB, cationic dye) using the prepared adsorbents was assessed. The value of pHpzc and the specific surface area of MCBC400 were 7.8 and 50.6 m2/g, respectively. The amounts of acidic or basic functional groups of MCBC400 were relatively greater than those of the other adsorbents. The amount of MB adsorbed onto MCBC400 (31.9 mg/g) was higher than that onto other adsorbents. The adsorption of MB using MCBC400 was evaluated in relation to various parameters, including coexistence, solution pH, adsorption temperature, and contact time. The results followed the Langmuir isotherm model and a pseudo-second-order model with correlation coefficients of 0.980-1.000 and 0.996, respectively. MB was selectively adsorbed by MCBC400 in a binary solution system containing anionic dyes. Finally, one of the adsorption mechanisms was determined by analyzing the elemental distribution and the binding energy before and after the adsorption of MB. The current findings provide important information for removing MB with MCBC400 from the aqueous phase.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"73 3","pages":"205-212"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613699","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

Physical Properties for Novel Cilostazol Co-amorphous; Effect of Preparation Method and Molar Ratio on the Co-amorphous. 新型西洛他唑共非晶材料的物理性质制备方法和摩尔比对共非晶的影响。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c24-00732

Tomoki Takayama, Shun Kaneko, Vasanthi Palanisamy, Makoto Ono, Varin Titapiwatanakun, Kenjirou Higashi, Toshiro Fukami

{"title":"Physical Properties for Novel Cilostazol Co-amorphous; Effect of Preparation Method and Molar Ratio on the Co-amorphous.","authors":"Tomoki Takayama, Shun Kaneko, Vasanthi Palanisamy, Makoto Ono, Varin Titapiwatanakun, Kenjirou Higashi, Toshiro Fukami","doi":"10.1248/cpb.c24-00732","DOIUrl":"10.1248/cpb.c24-00732","url":null,"abstract":"Co-amorphous materials have gained special attention in the pharmaceutical field due to their high potential to enhance the oral bioavailability of poorly aqueous soluble drugs. In co-amorphous studies, few reports have examined the physical properties and molecular states of different active pharmaceutical ingredients (APIs) : co-amorphous former (CF) molar ratios and preparation methods. Therefore, we investigated the effect of molar ratio and preparation method on the physical properties of a novel co-amorphous system consisting of cilostazol and l-tryptophan, which we identified through screening. Co-amorphous consisting of molar ratios of 1 : 1 (co-milling (CM) 1 : 1), 1 : 1.5 (CM 1 : 1.5), and 1 : 2 (CM 1 : 2) were prepared by the CM method, while samples with a molar ratio of 1 : 1 (spray drying (SD) 1 : 1) were prepared by the spray drying method. CM 1 : 1.5 and CM 1 : 2 showed the highest solubility. Storage stability was excellent for CM 1:1.5, CM 1 : 2, and SD 1 : 1, whereas physical properties were improved by co-amorphization. To investigate the factors responsible for the improved physical properties, the molecular state of the co-amorphous system was evaluated, and it was inferred that hydrogen bonds were formed between cilostazol and l-tryptophan. Solid-state 13C-NMR showed several new peaks specific to the solid state in the co-milled sample compared to SD 1 : 1 and cilostazol amorphous, suggesting that the molecular state may differ depending on the preparation method. As described above, different physical properties and molecular states were observed in the novel co-amorphous system consisting of cilostazol and l-tryptophan when the molar ratio of APIs and CF, and the preparation method differed.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"73 4","pages":"318-326"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143771456","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

Unconventional Synthetic Approaches to Unusual Peptide Derivatives. 不寻常肽衍生物的非常规合成方法。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c24-00752

Takeshi Nanjo

{"title":"Unconventional Synthetic Approaches to Unusual Peptide Derivatives.","authors":"Takeshi Nanjo","doi":"10.1248/cpb.c24-00752","DOIUrl":"10.1248/cpb.c24-00752","url":null,"abstract":"Peptides that contain unusual motifs, such as non-proteinogenic amino acids (AAs) and/or macrocyclic substructures, have recently attracted great attention as a new modality in medium-sized-molecule drug discovery. Therefore, it is highly important to develop methods for the chemical synthesis of a wide variety of such unusual peptide derivatives, which are often difficult to prepare via conventional synthetic approaches. In this review, the development of unconventional approaches for the synthesis of unusual peptide derivatives is discussed. Specifically, a novel external-oxidant-mediated decarboxylative condensation of α-ketoacids that can be applied to the synthesis of a wide variety of unusual peptide derivatives is reported. Moreover, an organocatalytic asymmetric Mannich-type addition is discussed that provides chiral β-amino-α-ketoacids, which are required as starting materials for the decarboxylative condensation. In this reaction, the adducts corresponding to various unusual AA side chains are obtained in high yield and excellent stereoselectivity. Furthermore, the \"N-chloropeptide strategy\" is proposed as a new method for the chemical modification of peptides without the need for a reactive AA residue.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"73 4","pages":"268-282"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143771457","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

Novel Vial-Inner-Surface Treatment Technology Improves Chemical Durability and Vial-Inner-Surface Uniformity to Reduce Drug Adsorption on the Vial. 新型小瓶内表面处理技术提高化学耐久性和小瓶内表面均匀性，减少药物在小瓶上的吸附。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c24-00658

Norikazu Miyamoto, Kenta Ohsugi, Taishi Higashi, Keiichi Motoyama

引用次数: 0

Design, Synthesis, and Anti-SARS-CoV-2 Activity of Amodiaquine Analogs. 阿莫地喹类似物的设计、合成及其抗sars - cov -2活性

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c24-00647

Shin Aoki, Tomohiro Tanaka, Kenta Yokoi, Azusa Kanbe, Tomoe Morita, Mayuka Nii, Hidetoshi Satoh, Masaki Kakihana, Shotaro Otaki, Saki Sekiguchi, Koki Nakamura, Toshifumi Tojo, Masanori Baba, Mika Okamoto

引用次数: 0

Asymmetric Synthesis of 3-Spiro-Fused 2-Oxindoles via Organocatalyst/N-Iodosuccinimide/Hydrogen Peroxide-Mediated Oxidative Cyclization. 有机催化剂/ n -碘丁二酰亚胺/过氧化氢催化氧化环化不对称合成3-螺融合2-氧吲哚。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c24-00839

Kosuke Nakashima, Yuichi Okuaki, Misaki Deguchi, Yasuyuki Matsushima, Shin-Ichi Hirashima, Tsuyoshi Miura

引用次数: 0

Potential of Waste Basil Seeds for Gadolinium Ion Removal from Aqueous Solutions. 废罗勒籽去除水溶液中钆离子的潜力。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c25-00085

Fumihiko Ogata, Noriaki Nagai, Yugo Uematsu, Nanami Matsumoto, Chalermpong Saenjum, Naohito Kawasaki

{"title":"Potential of Waste Basil Seeds for Gadolinium Ion Removal from Aqueous Solutions.","authors":"Fumihiko Ogata, Noriaki Nagai, Yugo Uematsu, Nanami Matsumoto, Chalermpong Saenjum, Naohito Kawasaki","doi":"10.1248/cpb.c25-00085","DOIUrl":"https://doi.org/10.1248/cpb.c25-00085","url":null,"abstract":"This study examined the potential of waste basil seeds (BSs) calcined at 500°C or 1000°C (BS500 or BS1000, respectively) for gadolinium removal from aqueous solutions. Gadolinium ion adsorption onto the produced adsorbents was also assessed in relation to a number of parameters, including initial concentration, adsorption temperature, exposure time, and pH. Higher initial concentrations, adsorption temperatures, and exposure times (BS, BS500 ≒ BS1000) resulted in an increase in the quantity of adsorbed gadolinium ions; To further understand the adsorption mechanism, detailed analyses of elemental distribution and binding energy were conducted. According to the proposed mechanism, gadolinium adsorption onto BS1000 may involve an ion exchange process, wherein hydrogen ions from functional groups such carboxyl and hydroxyl groups on the surface of BS1000 are replaced by gadolinium ions. Additionally, the effects of coexisting ions on gadolinium adsorption were investigated, revealing that while monovalent cations did not impact gadolinium ion adsorption capacity, divalent and trivalent cations significantly reduced it. Finally, the desorption of gadolinium ions was tested using desorption agents such as distilled water, hydrochloric acid, and sodium hydroxide. The results revealed that a 100 mmol/L hydrochloric acid solution was particularly effective for desorbing gadolinium ions. Overall, BS1000 demonstrates promising properties as an adsorbent for gadolinium ion removal from aqueous solutions.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"73 5","pages":"427-433"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143974605","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

Selection of Short 5'-UTR of Chemically Synthesized mRNA to Improve Translation Efficiency. 化学合成mRNA短5'-UTR的选择提高翻译效率。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c25-00048

Sana Ohashi, Sumie Ishiguro, Tsukasa Fukunaga, Akinobu Matsumoto, Mina Hirata, Masahito Inagaki, Naoko Abe, Fumitaka Hashiya, Hiroshi Abe

{"title":"Selection of Short 5'-UTR of Chemically Synthesized mRNA to Improve Translation Efficiency.","authors":"Sana Ohashi, Sumie Ishiguro, Tsukasa Fukunaga, Akinobu Matsumoto, Mina Hirata, Masahito Inagaki, Naoko Abe, Fumitaka Hashiya, Hiroshi Abe","doi":"10.1248/cpb.c25-00048","DOIUrl":"https://doi.org/10.1248/cpb.c25-00048","url":null,"abstract":"The advent of mRNA medicine, initially implemented as a vaccine during the coronavirus disease 2019 (COVID-19) pandemic, has attracted interest in diverse therapeutic applications, including cancer vaccines and protein replacement therapies. Our group recently established a method for the complete chemical synthesis of mRNA. Although this approach has some advantages, chemically synthesized mRNA is limited to approximately 150 nucleotides in length and necessitates optimized designs for untranslated regions (UTRs) and coding sequences. To address this challenge, we investigated whether the non-reporter-based selection methods, including ribosome profiling and polysome profiling, which were often used for UTR optimization in long mRNA, could be adapted for short mRNA to identify highly translated UTR sequences. Using these methods, we collected mRNAs that interacted with ribosomes and analyzed their 5'-UTR sequences. We successfully identified a 9-nucleotide 5'-UTR that demonstrated approximately double the translation efficiency of the Kozak sequence, a widely used positive control. This work highlights the adaptability of ribosome-focused selection techniques for short, chemically synthesized mRNA and provides a foundation for effective sequence design. These findings advance the development of chemically synthesized mRNA as a viable alternative to in vitro-transcribed mRNA, paving the way for innovative therapeutic applications.","PeriodicalId":9773,"journal":{"name":"Chemical & pharmaceutical bulletin","volume":"73 5","pages":"449-456"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092974","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

Teleocidin Analogs Isolated from Streptomyces eurocidicus as Membrane-Vesicle-Regulated Natural Products. 从嗜酸性链霉菌中分离的嗜远杀素类似物作为膜-囊泡调节的天然产物。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c25-00197

Aya Yoshimura, Ryusuke Nakada, Toshiyuki Wakimoto

引用次数: 0

Isolation of Compounds Including Two New Compounds from Asiasarum Root and Their Anti-glycation Activity. 亚洲细辛根中两种新化合物的分离及其抗糖化活性研究。

IF 1.5 4区医学

Chemical & pharmaceutical bulletin Pub Date : 2025-01-01 DOI: 10.1248/cpb.c25-00034

Aiko Sano, Ryuichiro Suzuki

引用次数: 0