The Preparation of l-Abietic Acid (Schulz) and Properties of Some of its Salts¹

Synthesis and characterization of a polymethacrylate containing photoreactive abietic acid moiety

“…Abietic acid was isolated from crude abietic acid (Aldrich, 70%) using dipentylamine. 10 Tetramethylammoniumbromide (TMAB) (Aldrich, 98%) was used as received. 2,2'-Azobisisobutyronitrile (AIBN) of reagent grade was recrystallized from methanol.…”

Synthesis of Photocrosslinkable Polymers Using Abietic Acid and Their Characterization

“…Abietic acid was isolated from crude abietic acid (Aldrich, 70%) using dipentylamine. 7 The melting point was 167-169 • C. 2, 2 -Azobisisobutyronitrile (AIBN) of reagent grade was recrystallized from methanol. Methyl methacrylate (MMA) of reagent grade was distilled in the presence of hydroquinone under reduced pressure.…”

Diterpenoids from the Needles of the Endangered Plant Pinus dabeshanensis and Their Protein Tyrosine Phosphatase 1B Inhibitory Effects

“…通过运用硅胶、Sephadex LH-20 凝胶和半制备型 HPLC 等色谱分离纯化手段, 从大别山五针松(P. dabeshanensis)松针(干重 30 g)的 90%甲醇提取物中共分离得 到 10 个二萜类化合物(图 1). 通过对比文献以及分析其 理化数据, 其中 9 个已知二萜化合物分别被鉴定为 7callitrisic acid (2) [7] 、abieta-7,13-diene-18-oic acid (3) [7～9] 、 isopimara-7-en-18-oic acid (4) [10,11] 、8 14-podocarpen-13on-18-oic acid (5) [12] 、trans-abienol (6) [13] 、3β-hydroxy-12,13E-biformen (7) [14] 、lambertianic acid (8) [15～17] 、16ξhydroxpinusolidic acid (9) [15] 、15ξ-hydroxpinusolidic acid (10) [15] . [7] 的结构非常相似, 区别仅在于化合 [6,18] .…”