An asymmetric total synthesis of ent-sandaracopimaradiene, a biosynthetic intermediate of oryzalexins, via B-alkyl Suzuki-Miyaura coupling and Lewis acid-mediated B-ring formation as key steps was achieved.
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Low clinical activity score, 'progressive' thyroid eye disease: presentations of 1439 patients from a tertiary centre in Hong Kong.
Br J Ophthalmol
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Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong, Hong Kong
Background: To report the presenting clinical, serological and treatment profiles of 1439 patients with thyroid eye disease (TED) from a tertiary centre in Hong Kong.
Study Populations: Consecutive patients with TED presented to the Thyroid Eye Clinic (TEC), the Chinese University of Hong Kong between 2014 and 2023.
Methods: Prospective cohort and masked review of medical records and orbital images.
Asymmetric Total Syntheses of Sarglamides A, C, and E.
J Org Chem
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State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 Gansu, P. R. China.
The asymmetric total syntheses of sarglamides A, C, and E in concise and protecting group free fashion is disclosed. Key steps involve an -selective Diels-Alder reaction to construct the bicyclo[2.2.
View Article and Find Full Text PDFCatalytic Asymmetric Total Synthesis of (+)-Chamaecydin and (+)-Isochamaecydin and their Stereoisomers.
Angew Chem Int Ed Engl
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Changchun Institute of Applied Chemistry Chinese Academy of Sciences: Chang Chun Institute of Applied Chemistry Chinese Academy of Sciences, Jilin Province Key Lab of Green Chemistry and Process, CHINA.
A modular approach was developed for the first catalytic asymmetric total syntheses of naturally occurring C30 terpene quinone methides and their non-natural stereoisomers, which feature the presence of an unprecedented spiro[4.4]nonane-containing 6-6-6-5-5-3 hexacyclic skeleton. Resting on a chiral phosphinamide-catalyzed enantioselective reduction of 2,2-disubstituted cyclohexane-1,3-dione, a concise route for the synthesis of enantioenriched 6-6 bicyclic fragment was developed.
View Article and Find Full Text PDFThe Bimanual Observation of The Hands (BOTH): Development, reliability, and validity for stroke rehabilitation.
PLoS One
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Department of Occupational Therapy, School of Health Professions, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel.
Importance: To efficiently perform bimanual daily tasks, bimanual coordination is needed. Bimanual coordination is the interaction between an individual's hands, which may be impaired post-stroke, however clinical and functional assessments are lacking and research is limited.
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Divergent Total Syntheses of Phragmalin and Khayanolide-Type Limonoids: A Torquoselective Interrupted Nazarov Approach.
J Am Chem Soc
January 2025
Department of Chemistry, Zhejiang University, Hangzhou 310058, China.
The asymmetric and divergent total syntheses of two phragmalin (moluccensins G and H) and two khayanolide-type (krishnolide F and khayseneganin F) limonoids were disclosed, which employed a torquoselective interrupted Nazarov cyclization as the key step. Taken together with a Liebeskind-Srogl coupling, a benzoin condensation, and bidirectional acyloin rearrangements, our strategy would simplify the synthetic design of both phragmalin and khayanolide-type limonoids and facilitate their modular syntheses. Moreover, the described approach also provides additional insights into the biosynthetic relationships between these two distinct skeletons.
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