products--polyoxygenated cyclohexenes exhibited potent anti-tumor activity, such as zeylenone, which is a natural product isolated from Uvaria grandiflora Roxb. This article will attempt to establish a gram-scale synthesis method of (+)-zeylenone and explain the structure–activityrelationship of this kind of compound. Total synthesis of (+)-zeylenone was completed in 13 steps with quinic acid as the