Methods for making trans-(−)-Δ
9
-tetrahydrocannabinol and trans-(+)-Δ
9
-tetrahydrocannabinol are disclosed herein. In one embodiment, a trans-(−)-Δ
9
-tetrahydrocannabinol composition is prepared by allowing a composition comprising (±)-Δ
9
-tetrahydrocannabinol to separate on a chiral stationary phase to provide a trans-(−)-Δ
9
-tetrahydrocannabinol composition comprising at least about 99% by weight of trans-(−)-Δ
9
-tetrahydrocannabinol based on the total amount of trans-(−)-Δ
9
-tetrahydrocannabinol and trans-(+)-Δ
9
-tetrahydrocannabinol. The invention also relates to methods for treating or preventing a condition such as pain comprising administering to a patient in need thereof an effective amount of a trans-(−)-Δ
9
-tetrahydrocannabinol having a purity of at least about 98% based on the total weight of cannabinoids.
本文披露了制备反式(-)- Δ9-
四氢大麻酚和反式(+)- Δ9-
四氢大麻酚的方法。在一种实施例中,通过让包含(±)- Δ9-
四氢大麻酚的组合物在手性固定相上分离,制备了反式(-)- Δ9-
四氢大麻酚组合物,其中反式(-)- Δ9-
四氢大麻酚的重量占反式(-)- Δ9-
四氢大麻酚和反式(+)- Δ9-
四氢大麻酚总量的至少约99%。本发明还涉及治疗或预防疼痛等症状的方法,包括向需要治疗的患者施用至少约98%的纯度的反式(-)- Δ9-
四氢大麻酚的有效量,基于
大麻素的总重量。