Browsing by Author "Supyen Damrat"

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Browsing by Author "Supyen Damrat"

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  • Phytochemical and Larvicidal Studies on Stemona curtisii: Structure of a New Pyrido[1,2-a]azepine Stemona Alkaloid 
    Mungkornasawakul Pitchaya; Pyne Stephen; Jatisatienr Araya; Supyen Damrat; Jatisatienr Chaiwat; Lie Wilford; Ung Alison; Skelton Brian; White Allan (American Chemical Society, 2004)
    A new pentacyclic Stemona alkaloid, stemocurtisinol (3), with a pyrido[1,2-a]azepine A,B-ring system, and the known pyrrolo[1,2-a]azepine alkaloid oxyprotostemonine (4) have been isolated from a root extract of S. curtisii. ...
  • Phytochemical Studies on Stemona burkillii Prain: Two New Dihydrostemofoline Alkaloids 
    Mungkornasawakul Pitchaya; Pyne Stephen; Jatisatienr Araya; Lie Wilford; Ung Alison; Issakul Kritchaya; Sawatwanich Auntika; Supyen Damrat; Jatisatienr Chaiwat (American Chemical Society, 2004)
    Two new dihydrostemofoline alkaloids, 11(S),12(R)-dihydrostemofoline (3) and stemoburkilline (4), along with stemofoline (1) and 2`-hydroxystemofoline (2) have been isolated from a root extract of Stemona burkillii Prain. ...
  • Stemocurtisine, the First Pyrido[1,2-a]azapine Stemona Alkaloid 
    Mungkornasawakul Pitchaya; Pyne Stephen; Jatisatienr Araya; Supyen Damrat; Lie Wilford; Ung Alison; Skelton Brian; White Allan (American Chemical Society, 2003)
    A new pentacyclic stemona alkaloid, stemocurtisine (2), with a novel pyrido[1,2-a]azapine A,B-ring system, has been isolated from a root extract of Stemona curtisii. The structure and relative stereochemistry was determined ...