A Carbohydrate‐based Synthetic Approach to Diverse Structurally and Stereochemically Complex Chiral Polyheterocycles
作者:Samuzal Bhuyan、Dharmendra Das、Amit Chakraborty、Susanta Mandal、Kumaraswamy Dhanabal、Biswajit Gopal Roy
DOI:10.1002/asia.202101123
日期:2021.12.13
Chiral polyheterocyclic structures are very common in natural products and drug molecules. A carbohydrate-based diversity oriented synthetic (DOS) approach has been employed for synthesis of many structurally diverse and stereochemically complex rigid polyheterocyclic molecules with multiple chiral hydroxyl groups. A chemoinformatic comparison with blockbuster drugs revealed that most of the newly
Stereoselective Synthesis of Chiral Oxepanes and Pyrans through Intramolecular Nitrone Cycloaddition in Organized Aqueous Media
作者:Amrita Chatterjee、Pranab K. Bhattacharya
DOI:10.1021/jo051414j
日期:2006.1.1
A highly stereoselective surfactant-catalyzed intramolecularnitrone (formed by dehydration in water) cycloaddition in aqueous media leading to exclusive formation of a single isomer is reported. Either oxepane or pyran is formed from 3-O-allyl furanoside derivatives, which constitute the framework of a large number of biologically active compounds. Therefore, the environmentally friendly, efficient