Fig. 2
From: Novel phthalide derivatives identified from Ligusticum chuanxiong (Chuanxiong)

Key HMBC and 1H-1H COSY correlations of 1
From: Novel phthalide derivatives identified from Ligusticum chuanxiong (Chuanxiong)
Key HMBC and 1H-1H COSY correlations of 1