Acetylation of lagochilin

Mass spectrometry of metastable ions from lagochiline-type diterpenoids

“…We studied the mass spectra and spectra of metastable ions of lagochiline (1) [2], 3,18-O-isopropylidene lagochiline (2) [3], 3,18,15,16-di-O-isopropylidene lagochiline (3) [3], acetyl derivatives of lagochiline (4-13) [4], anhydrolagochiline (14) [5], lagochirsine (15) [6], isolagochirsine (16) [5], lagochirsidine (17) [5], dehydration products of lagochiline 11,12-dehydrolagochiline (18) [6], 9,13-epoxy-3,18,16-trihydroxy-15-norlabdane (19) [7], acid-hydrolysis products of lagoden 6,7-dehydrolagochirsine (20) [6], and a mixture of acetyl derivatives from acetylation of lagochiline by acetic anhydride [8].…”