Lipophilic extracts from flowers, leaves, and roots of Lamiophlomis rotata (Benth.) were analyzed using GC-MS. A total of 67 compounds were identified.Lamiophlomis (family Lamiaceae) is a monotypic genus with the species L. rotata (Benth.) Kudo, which is endemic to the Qinghai-Tibetan Plateau [1]. L. rotata is a nonstalk and perennial herb distributed in Bhutan, India (Sikkim), Nepal, and China [2]. In China, it has long been used as a folk medicinal plant to promote blood circulation, remove blood stasis, subdue swelling, and alleviate pain [3]. Current studies have indicated that L. rotata can be a remedy for a number of diseases, such as cancer, multidrug resistant tuberculosis (MDR-TB), rheumatic arthritis, and breast swelling [4][5][6][7][8][9]. More than ten compounds have been isolated from this species, in which four are phenylpropanoid glycosides and seven are iridoids [10,11]. However, lipophilic extracts in L. rotata have not been previously investigated.We identified a total of 67 compounds in the lipophilic extracts from flowers, leaves, and roots of L. rotata from three regions in the Qinghai-Tibetan Plateau, i.e., Tibetan Autonomous Region, Qinghai Province, and Yunnan Province (Table 1). The sixteen major compounds (> 4%) isolated included five common to flowers, leaves, and roots: linolenic acid methyl ester (8.77-11.90% in flowers, 11.19-18.23% in leaves, and 17.31-20.80% in roots), 9,12-octadecadienoic acid (6.90-15.78% in flowers, 2.75-9.36% in leaves, and 8.06-19.11% in roots), hexadecanoic acid (9.97-14.98% in flowers, 7.08-12.42% in leaves, and 9.65-18.54% in roots), β-sitosterol (13.72-16.63% in flowers, 15.04-18.00% in leaves, and 13.05-16.57% in roots), and stearic acid (2.41-4.07% in flowers, 2.02-4.52% in leaves, and tr -7.83% in roots); one common to flowers and roots, i.e., n-cetane (0.12-4.13% in flowers and 0.24-7.17% in roots); one common to flowers and leaves, i.e., n-hentriacontane (4.08-7.76% in flowers and 7.18-8.58% in roots); three in flowers only: myristic acid (0.94-4.09%), cyclohexenylacetic acid (2.41-4.07%) and n-nonacosane (4.33-4.80%); two in the leaves only: trimethyl-pentadecan-2-ol (5.06-7.50%) and n-tritriacontane (0.93-5.08%); and four in roots only: campesterol (3.92-8.83%), n-heptadecane (0.26-7.69%), n-pentadecane (1.15-5.71%), and n-octadecane (tr-4.93%).
EXPERIMENTALFresh samples of L. rotata were collected from eight locations in three regions i.e., Tibet (four locations), Qinghai (two locations), and Yunnan (two locations) in August, 2004. The voucher specimens were deposited at the Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering at Fudan University. Plant material was air dried at room temperature for about a month prior to analysis.