1.
Chem Biodivers
; 3(2): 175-9, 2006 Feb.
Article
in English
| MEDLINE
| ID: mdl-17193255
ABSTRACT
Two new ent-clerodane-type diterpenoids, compounds 1 and 2, were isolated from the aerial parts of Pulicaria wightiana, together with three known constituents. Their structures were established based on spectroscopic data, and their antibacterial activities were evaluated (Table 2).
Subject(s)
Diterpenes, Clerodane/isolation & purification , Diterpenes/isolation & purification , Plant Components, Aerial , Pulicaria , Anti-Bacterial Agents/chemistry , Anti-Bacterial Agents/isolation & purification , Diterpenes/chemistry , Diterpenes, Clerodane/chemistry , Microbial Sensitivity Tests , Plant Components, Aerial/microbiology , Plant Extracts/chemistry , Plant Extracts/isolation & purification , Pulicaria/microbiology
2.
Chem Pharm Bull (Tokyo)
; 54(3): 403-5, 2006 Mar.
Article
in English
| MEDLINE
| ID: mdl-16508203
ABSTRACT
2-Benzoxepines have efficiently been synthesized from Morita-Baylis-Hillman adducts, alkyl 3-aryl-3-hydroxy-2-methylenepropanoates by treatment with HCHO catalyzed by silica supported perchloric acid (HClO4.SiO2) or Amberlyst-15 in CH2Cl2 under reflux for a short period of time (1.5-2.5 h). The catalyst can be recovered and recycled. The antibacterial properties of the new 2-benzoxepines were studied but no activity was found.
