supplementary material is available for this article at 10.1007/s13659 - 013 - 0057 - 0 and is accessible for authorized users .
 four new diterpenoids , laxiflorins s - v ( 14 ) , bearing four different types , and one known compound , laxiflorin o ( 5 ) , were isolated from isodon eriocalyx var . 
 laxiflora . 
 compound 1 was the first example of ent - kauranoids bearing a unique c24 carbon framework and compound 4 was the first example of 3,4-seco - ent - abietane diterpenoids from the isodon genus . 
 their structures were determined by spectroscopic methods ( uv , ir , ms , nmr ) . 
 electronic supplementary materialsupplementary material is available for this article at 10.1007/s13659 - 013 - 0057 - 0 and is accessible for authorized users . 
Electronic Supplementary Material
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