We have adopted and extended the CHMTRN language and used it for the knowledge base of a computer program to generate a large database of synthetically accessible, drug-like chemical structures, the Synthetically Accessible Virtual Inventory (SAVI) Database. CHMTRN is a powerful language originally developed in the LHASA (Logic and Heuristics Applied to Synthetic Analysis) project at Harvard University and used together with the chemical pattern description language, PATRAN, to describe chemical retro-reactions. The languages have proven to be useful beyond the design of retrosynthetic routes and have the potential for much wider use in chemistry; this paper describes CHMTRN and PATRAN as now reimplemented for the forward-synthetic SAVI project but able to describe both forward and retro-reactions.
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http://dx.doi.org/10.1021/acs.jcim.0c00448 | DOI Listing |
Angew Chem Int Ed Engl
January 2025
University of Bari: Universita degli Studi di Bari Aldo Moro, Dept. of Pharmacy - Drug Sciences, via E. Orabona 4, 70125, Bari, ITALY.
Strained spiro-heterocycles (SSH) have gained significant attention within the medicinal chemistry community as promising (sp3)-rich bioisosteres for their aromatic and non-spirocyclic counterparts. We herein report access to an unprecedented spiro-heterocycle - 1,5-dioxaspiro[2.3]hexane.
View Article and Find Full Text PDFOrg Biomol Chem
January 2025
State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine, Guizhou Medical University, Guiyang 550014, China.
An unsuccessful attempt to directly construct alkaloid iheyamine A from a fascaplysin framework resulted in the discovery of a novel synthetic approach to alkylated δ,γ-biscarboline derivatives. With the easy-to-operate reaction conditions of this protocol, 18 alkylated biscarbolines have been prepared in moderate to good yields. An unexpected domino transformation was proposed to involve a pyridinium ring-opening/aza-electrocyclization/oxidative deformylation sequence.
View Article and Find Full Text PDFChem Sci
January 2025
College of Chemistry and Chemical Engineering, Key (Guangdong-Hong Kong Joint) Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University Shantou 515063 P. R. China
In the past few years, the direct activation of organohalides by ligated boryl radicals has emerged as a potential synthetic tool for cross-coupling reactions. In most existing methods, ligated boryl radicals are accessed from NHC-boranes or amine-boranes. In this work, we report a new photocatalytic platform by modular assembly of readily available amines and diboron esters to access a library of ligated boryl radicals for reaction screening, thus enabling the cross-coupling of organohalides and alkenes including both activated and unactivated ones for C(sp)-C(sp) bond formation by using the assembly of DABCO A1 and BNepB1.
View Article and Find Full Text PDFCureus
December 2024
Obstetrics and Gynaecology, Khyber Teaching Hospital, Peshawar, PAK.
Background Hysteroscopy, a minimally invasive procedure for diagnosing and treating intrauterine pathologies, can be challenging due to inadequate cervical dilation, leading to procedural difficulties and patient discomfort. Misoprostol, a synthetic prostaglandin E1 analog, is increasingly used for cervical ripening to ease hysteroscopic procedures. Objective To evaluate the efficacy and safety of misoprostol for cervical ripening prior to hysteroscopy.
View Article and Find Full Text PDFLangmuir
January 2025
Department of Chemistry, Christ University, Bangalore 560029, Karnataka.
The inclusion of redox mediators into electrocatalytic systems facilitates rapid electron shuttling kinetics and boosts the overall catalytic performance of the electrode. This approach overcomes the sluggish reaction dynamics associated with direct electron transfer, which may be impeded by restricted analyte access to the electrode's active sites. In contrast to conventional synthetic redox mediators, naturally sourced phytomolecule rutin trihydrate (RT), extracted from apple juice, offers potential ecological advantages.
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