Bulletin of the Chemical Society of Japan最新文献_第3页

Structure-Activity Relationship Studies on Iezoside, a Highly Potent Ca2+ ATPase Inhibitor 强效 Ca2+ ATP 酶抑制剂 Iezoside 的结构-活性关系研究

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-06 DOI: 10.1093/bulcsj/uoae070

Naoaki Kurisawa, Kazuya Teranuma, Akari Noto, Arihiro Iwasaki, Yoshiki Kabashima, Rie Nakajima, Chikashi Toyoshima, Kiyotake Suenaga

引用次数: 0

Discrete Polyketones: Synthesis, Derivatization, and Potential Applications 离散多酮类化合物：合成、衍生和潜在应用

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-07-04 DOI: 10.1093/bulcsj/uoae072

Yasuhide Inokuma

{"title":"Discrete Polyketones: Synthesis, Derivatization, and Potential Applications","authors":"Yasuhide Inokuma","doi":"10.1093/bulcsj/uoae072","DOIUrl":"https://doi.org/10.1093/bulcsj/uoae072","url":null,"abstract":"The present account reviews recent progress in the synthesis, functionalization, and application of discrete polyketones. Whereas most polyketones are synthesized as polydisperse polymers with various molecular chain lengths and sizes, discrete polyketones are obtained in chemically pure forms. This allows precise structural analysis using NMR and X-ray diffraction. Discrete polyketones have been used to determine the critical chain length that distinguishes the crystallization behaviors of small molecules from those of macromolecules. Calix[3]pyrrole, which is a ring-contracted analogue of porphyrinogen, was first obtained from a cyclic hexaketone. The discovery of the strain-induced ring expansion reaction of calix[3]pyrroles has provided an important insight into solving a long-standing enigma in porphyrin synthesis. Chemical derivatization of discrete polyketones using ketone-derived transformations has resulted in the generation of various functional molecules for potential applications. These molecules have been used to develop several materials, including luminescent chromophores, ion adsorbents, drug–drug conjugates, and microfluidic devices for cancer diagnosis.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"14 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic disruption of dopamine β-hydroxylase dysregulates innate responses to predator odor in mice. 基因干扰多巴胺β-羟化酶会导致小鼠对捕食者气味的先天反应失调。

3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-01-27 DOI: 10.1101/2023.06.21.545975

Joyce Liu, Daniel J Lustberg, Abigail Galvez, L Cameron Liles, Katharine E McCann, David Weinshenker

{"title":"Genetic disruption of dopamine β-hydroxylase dysregulates innate responses to predator odor in mice.","authors":"Joyce Liu, Daniel J Lustberg, Abigail Galvez, L Cameron Liles, Katharine E McCann, David Weinshenker","doi":"10.1101/2023.06.21.545975","DOIUrl":"10.1101/2023.06.21.545975","url":null,"abstract":"In rodents, exposure to predator odors such as cat urine acts as a severe stressor that engages innate defensive behaviors critical for survival in the wild. The neurotransmitters norepinephrine (NE) and dopamine (DA) modulate anxiety and predator odor responses, and we have shown previously that dopamine β-hydroxylase knockout (Dbh -/-), which reduces NE and increases DA in mouse noradrenergic neurons, disrupts innate behaviors in response to mild stressors such as novelty. We examined the consequences of Dbh knockout (Dbh -/-) on responses to predator odor (bobcat urine) and compared them to Dbh-competent littermate controls. Over the first 10 min of predator odor exposure, controls exhibited robust defensive burying behavior, whereas Dbh -/- mice showed high levels of grooming. Defensive burying was potently suppressed in controls by drugs that reduce NE transmission, while excessive grooming in Dbh -/- mice was blocked by DA receptor antagonism. In response to a cotton square scented with a novel \"neutral\" odor (lavender), most control mice shredded the material, built a nest, and fell asleep within 90 min. Dbh -/- mice failed to shred the lavender-scented nestlet, but still fell asleep. In contrast, controls sustained high levels of arousal throughout the predator odor test and did not build nests, while Dbh -/- mice were asleep by the 90-min time point, often in shredded bobcat urine-soaked nesting material. Compared with controls exposed to predator odor, Dbh -/- mice demonstrated decreased c-fos induction in the anterior cingulate cortex, lateral septum, periaqueductal gray, and bed nucleus of the stria terminalis, but increased c-fos in the locus coeruleus and medial amygdala. These data indicate that relative ratios of central NE and DA signaling coordinate the type and valence of responses to predator odor.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10793432/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88774644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vapor-phase Dehydrogenation of 3-Methyl-2-butanol over Silica-supported Cu Catalyst Prepared by Mannitol-assisted Impregnation 通过甘露醇辅助浸渍法制备的二氧化硅支撑铜催化剂上的 3-甲基-2-丁醇气相脱氢反应

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-01-10 DOI: 10.1093/bulcsj/uoae001

Koki Sato, Enggah Kurniawan, Shun Sasaki, Kenta Matsusaka, Yasuhiro Yamada, Satoshi Sato

引用次数: 0

Materials Chemistry for Metal Halide Perovskite Photovoltaics 金属卤化物过氧化物光伏材料化学

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-01-07 DOI: 10.1093/bulcsj/uoad025

Tomoya Nakamura, Yoshio Kondo, Noboru Ohashi, Chihiro Sakamoto, Akio Hasegawa, Shuaifeng Hu, Minh Anh Truong, R. Murdey, Yoshihiko Kanemitsu, A. Wakamiya

{"title":"Materials Chemistry for Metal Halide Perovskite Photovoltaics","authors":"Tomoya Nakamura, Yoshio Kondo, Noboru Ohashi, Chihiro Sakamoto, Akio Hasegawa, Shuaifeng Hu, Minh Anh Truong, R. Murdey, Yoshihiko Kanemitsu, A. Wakamiya","doi":"10.1093/bulcsj/uoad025","DOIUrl":"https://doi.org/10.1093/bulcsj/uoad025","url":null,"abstract":"\u0000 Metal halide perovskite semiconductors are excellent materials for next-generation solar cells. As a result of research and development all over the world, the photoelectric conversion efficiency for single-cell devices has rapidly improved to over 26% (as of July 2023), while the record efficiency for silicon-on-perovskite tandem devices currently stands at 33.7% (reported in May 2023). Materials chemistry has made many important contributions toward these remarkable results. In this account, we will introduce our achievements in these areas of material chemistry research for improving the performance of perovskite photovoltaics, including the development of high-purity precursor materials, and precursor inks tailored for large-area printed perovskite films. Studies of the nucleation and crystallization process, including simulations, have led to the reliable fabrication of high-quality perovskite films. Diverse new charge collection materials, as well as compounds to effectively modify the perovskite surfaces, have improved solar cell performance.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"30 3","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139448649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Linear Dichroism Measurement of Geomagnetic Orientation of Magnetic Nanoparticles 线性分色测量磁性纳米粒子的地磁方向

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2024-01-04 DOI: 10.1093/bulcsj/uoad026

Hitoshi Watarai

引用次数: 0

La(III)-Catalyzed Depolymerization of Poly(L-Lactic Acid) Yielding Chiral Lactates La(III)-Catalyzed Depolymerization of Poly(L-Lactic Acid) Yielding Chiral Lactates（L(III)催化的聚(L-乳酸)解聚产生手性乳酸盐

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2023-12-13 DOI: 10.1246/bcsj.20230183

Natsumi Kobayashi, Nobuyuki Komine, Kotohiro Nomura, Hiroshi Hirano, Masafumi Hirano

引用次数: 0

Mechanistic Studies on Oxygen-Insertion into Osmium(III)–Carbon Bond via High-Valent Oxido-Osmium(V) Complex 氧通过高价氧化锇(V)配合物插入锇(III) -碳键的机理研究

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2023-12-06 DOI: 10.1246/bcsj.20230213

Hideki Sugimoto, Kurumi Aoki, Shinobu Itoh

引用次数: 0

Structural and Magnetic Properties of the B-Site-Ordered Double Perovskites Ln2NiTiO6 (Ln = La, Pr, and Nd) b位有序双钙钛矿Ln2NiTiO6 (Ln = La, Pr, Nd)的结构和磁性能

IF 4 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2023-12-02 DOI: 10.1246/bcsj.20230154

Masato Goto, Masato Okazaki, Yuichi Shimakawa

引用次数: 0

Correlation Between Attendance and Performance of Undergraduate Medical Students in Otorhinolaryngology: A Retrospective Cohort Study. 耳鼻咽喉科本科医学生出勤率与成绩的相关性:一项回顾性队列研究。

IF 3.3 3区化学

Bulletin of the Chemical Society of Japan Pub Date : 2023-12-01 Epub Date: 2023-06-21 DOI: 10.1007/s12070-023-03995-9

Ajeet Kumar Khilnani

{"title":"Correlation Between Attendance and Performance of Undergraduate Medical Students in Otorhinolaryngology: A Retrospective Cohort Study.","authors":"Ajeet Kumar Khilnani","doi":"10.1007/s12070-023-03995-9","DOIUrl":"10.1007/s12070-023-03995-9","url":null,"abstract":"Introduction: Technology has changed the dynamics of teaching and learning any subject. More emphasis is being laid on e-learning and self-directed learning. In this scenario, there is a rising doubt whether the physical attendance of students in theory lectures and clinical postings is at all important. Various studies have been conducted in different subjects to find a relation between outcome and attendance. However, we could not find any study done in Otorhinolaryngology. Hence, this study was conducted with the aim to know the correlation between attendance and performance for Otorhinolaryngology undergraduate students.Methodology: This is a retrospective cohort study carried out in the Otorhinolaryngology Department of a tertiary care teaching hospital of western Gujarat. The attendance (theory and clinics, biometrically fetched), internal theory examination marks (out of 40), and internal practical examination marks (out of 40) of a single batch students were obtained from the academic records and analyzed using Microsoft Excel sheet.Results: Out of 158 students, data of 151 students was analyzed in this study (7 students were absent on the day of examination). 76 students were boys and 75 girls. The combined (theory and clinics) average attendance of girls was 88.37%, as compared to 78.37% for boys (p < 0.0001). Out of 80 (40 for theory and 40 for clinics), girls got an average of 37.12 marks as compared to 30.89 for boys (p < 0.0001). There was a positive and significant correlation between marks obtained and attendance percentage for total students as well as for boys and girls separately.Conclusion: There is a positive and significant correlation between attendance percentage and marks obtained, both for theory and clinics, for Otorhinolaryngology undergraduate medical students.","PeriodicalId":9511,"journal":{"name":"Bulletin of the Chemical Society of Japan","volume":"73 1","pages":"3349-3352"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10646120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88148042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0