Macrocyclic Spermine Alkaloids fromVerbascum: Isolation, Structure Elucidation, and Syntheses of the (E/Z)-Isomeric Pairs (S)-Verbasikrine/(S)-Isoverbasikrine and (S)-Verbamekrine/(S)-Isoverbamekrine
摘要:
The isolation and structure elucidation of the 17-membered macrocyclic spermine alkaloids (S)-verbasikrine (3), (S)-isoverbasikrine (6), (S)-verbamekrine (9), and (S)-isoverbamekrine (12) is presented. The syntheses of their racemates are described. The HPLC/APCI-MS analysis of the original total alkaloid extract of Verbascum pseudonobile is presented.
Macrocyclic Spermine Alkaloids fromVerbascum: Isolation, Structure Elucidation, and Syntheses of the (E/Z)-Isomeric Pairs (S)-Verbasikrine/(S)-Isoverbasikrine and (S)-Verbamekrine/(S)-Isoverbamekrine
摘要:
The isolation and structure elucidation of the 17-membered macrocyclic spermine alkaloids (S)-verbasikrine (3), (S)-isoverbasikrine (6), (S)-verbamekrine (9), and (S)-isoverbamekrine (12) is presented. The syntheses of their racemates are described. The HPLC/APCI-MS analysis of the original total alkaloid extract of Verbascum pseudonobile is presented.
Macrocyclic Spermine Alkaloids fromVerbascum: Isolation, Structure Elucidation, and Syntheses of the (E/Z)-Isomeric Pairs (S)-Verbasikrine/(S)-Isoverbasikrine and (S)-Verbamekrine/(S)-Isoverbamekrine
The isolation and structure elucidation of the 17-membered macrocyclic spermine alkaloids (S)-verbasikrine (3), (S)-isoverbasikrine (6), (S)-verbamekrine (9), and (S)-isoverbamekrine (12) is presented. The syntheses of their racemates are described. The HPLC/APCI-MS analysis of the original total alkaloid extract of Verbascum pseudonobile is presented.