United States Patent (19) 11) Patent Number: 4,758,433 Johnson Et Al
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United States Patent (19) 11) Patent Number: 4,758,433 Johnson et al. (45. Date of Patent: Jul.19, 1988 54, OIL EXTRACT OF TANACETUM (56) References Cited PARTHENIUM FOR TREATING MIGRAINE PUBLICATIONS El-Ferally et al., Chem. 89: 87138k. 75) Inventors: Edward S. Johnson, Maidenhead; Joshi, Chem. Abst. 86: 72888u. Peter J. Hylands; Deborah M. Edriguez et al., 86: 72889y. Hylands nee Jessup, both of Picman et al., Chem. Abs. 100:99724g. Hausen et al., Chem. Abs. 100: 1884.5 x. Wickham, all of England Djermanovic et al., Chem. Abst. 97: 212667a. Mladenovic et al., Chen. Abst. 97: 212668b. (73) Assignee: R. P. Scherer Corp., Troy, Mich. Bohlmann et al., Chem. Abst. 97: 1594.79n. Stevens, Chem. Abst. 97: 159480t. 21 Appl. No.: 749,008 Hladon et al., Chem. Abst. 91: 68299p. Ogura et al., Chem. Abst. 90: 23285u. Lee et al., Cancer Research 31, 1649-1654, Nov. 1971. 22 Filed: Jun. 26, 1985 Soucek et al., Collective Czech. Chem. Comm., 1961, vol. 26, pp. 803-809. Blakeman, Chem. Abst. 91: 2076.14c. Related U.S. Application Data Romo et al., Tetrahedron, 1965, vol. 21, pp. 1744-1745. 63 Continuation-in-part of Ser. No. 494,964, May 16, Hall et al., Journal of Pharmaceutical Sciences, vol. 68, 1983, abandoned. No. 5, May 1979. Primary Examiner-Jane T. Fan (30) Foreign Application Priority Data Attorney, Agent, or Firm-Omri M. Behr May 19, 1982 (GB) United Kingdom ................. 82.14572 (57 ABSTRACT Sep. 22, 1982 GB United Kingdom ................. 8227062 A preparation for pharmaceutical use, especially in the treatment of migraine, arthritis and bronchial com 51) Int. Cl............................................... A61K 35/78 plaints contains a sesquiterpene lactone and is recovered 52 U.S. Cl. ................................. 424/195.1; 514/468; from the plant Tanacetum parthenium by extraction 549/299 using a pharmaceutically acceptable oil. 58) Field of Search ........................ 549/299; 514/468; 424/195.1 4 Claims, No Drawings 4,758,433 1. 2 culatory collapse caused by the release of histamine or OIL EXTRACT OF TANACETUM PARTHENIUM other endogenous substances. FOR TREATING MIGRAINE Drugs with spasmolytic actions such as aminophyl line are used to treat bronchospasm. Drugs with antihis This is a continuation-in-part of Ser. No. 494,964 filed 5 tamine activity are also used in asthma and for wheezing 5/16/83 now abandoned. and other symptoms associated with allergic phenom ena such as hay fever. FIELD OF THE INVENTION It has been known for many years that sesquiterpene This invention relates to sesquiterpene lactones and lactones are present in plants, for example, in the family sesquiterpene lactone-containing plant extracts and 10 Compositae (see Yoshio, Mabry and Timmermann, preparations for pharmaceutical use, and particularly to "Sesquiterpene Lactones, Chemistry, NMR and Plant compositions which are useful in the treatment of mi Distribution', University of Tokyo Press 1973). graine and various arthritic and bronchial conditions. Of these plant Tanacetum parthenium (formerly BACKGROUND OF THE INVENTION called Chrysanthemum parthenium and commonly 15 known as feverfew, featherfoil, flirtwort and Bachelor's The incidence of migraine is said to be in the region of Buttons) has been put forward in herbal medicine as a 12% of the population. Its precise causes have not been possibly effective treatment for migraine when con determined but certain elements in its causation are well sumed. No serious medical study of this treatment for documented. migraine has apparently been published, nor has there Neurohumoral and local hormone (autacoid) factors 20 been any consideration of what ingredient or ingredi such as noradrenaline, 5-hydroxytryptamine (seroto ents of the plant might be involved in this alleged effi nin), histamine and prostaglandins are implicated in cacy. migraine probably acting at the cerebro-vascular level. Many years ago, it was reported that the sesquiter There is much evidence to suggest that a disturbance pene lactones parthenolide and santamarine may be of blood vessel diameter is involved in the migraine 25 extracted from feverfew using light petroleum and process. Thus reports have demonstrated a constriction chloroform respectively (see Sorm et al, Coll. Czech. of cerebral cortical vessels followed by a dilatation Chem. Comm., (1961), 26, 803 and Romo et al, Tetrahe during a migraine attack. The vasoconstriction is be dron, (1965), 21, 1741 respectively). In those publica lieved to be due to the release of amines such as nor tions, there was no indication of any possible medical adrenaline from neurones and 5-hydroxytryptamine 30 use for the sesquiterpene lactones. from platelets. Histamine is also released from mast cells Some cytotoxic activity of parthenolide and several and plays an important role in the migraine variant other sesquiterpene lactones has also been reported known as cluster headache (migrainous neuralgia). some time ago (Lee et al, Cancer Research, (1971), 31, Drugs with antinoradrenaline, anti 5-hydroxytrypta 1649). There is, however, no suggestion in this article mine and antihistamine activities are all used to alleviate 35 that any sesquiterpene lactone or extract containing it the symptoms of migraine. Evidence that prostaglan may be useful in the treatment of migraine, arthritis or dins (PG), such as PGE2, PGF2, PGI2 (prostacyclin) bronchial complaints. or thromboxane A2 are involved comes from the fact More recently it has been shown that certain sesquit that non-steroidal anti-inflammatory drugs such as aspi erpene lactones are potent inhibitors of carrageenan rin, which act by inhibiting the synthesis of prostaglan induced edema and chronic adjuvant-induced arthritis dins, are highly effective for both the prophylactic and in rodents (see Hall, Starnes, Lee and Waddell, J. acute treatment of migraine. Pharm. Sci., (1979), 68,537). This article does not, how As to the causes of arthritic conditions, the suppres ever, suggest that any sesquiterpene lactone has phar sion of prostaglandin synthesis by non-steroidal anti-in maceutical activity against any complaint, let along flammatory drugs such as aspirin or indomethacin 45 against migraine. strongly implicates prostaglandins as inflammatory me diators at least in rheumatoid arthritis. Prostaglandin SUMMARY OF THE INVENTION like material is present in inflammatory perfusates of By repeated selective extraction of feverfew material, experimental animals. The E-prostaglandins in low con and extensive in vitro testing of the extracts for biologi centrations are striking potentiators of the pain-produc 50 cal activity, in particular spasmolytic activity in smooth ing properties of other agonists such as histamine, 5 muscle tests, we have found surprisingly that, of the hydroxytryptamine and plasmakinins (e.g. bradykinin) very many constituents of the plant, extracts containing as well as other features of the inflammatory response certain of the compounds within the range of sesquiter such as increased vascular permeability, erythema, pene lactones present have properties strongly indica white cell accumulation and platelet aggregation. 55 tive of efficacy in the treatment of migraine. This is Patients with bronchial asthma and chronic bronchi particularly surprising because the existence of some tis suffer attacks of wheezing and difficulty in breathing. such compounds in the plant has been known for many These are due to bronchial narrowing from spasm of the years and yet there has been no disclosure or suggestion bronchial smooth muscle or from sticky secretions, or anywhere in the literature that they possess any useful more commonly from a combination of the two. The activity against migraine. Furthermore, at least some of precise causes of the bronchoconstriction in asthma the reports on the use of feverfew in the treatment of have not been fully elucidated, but it is believed endoge migraine suggest taking an aqueous extract of the plant nous neurohumoral and autocoid spasmogens such as as "tea'. This points away from sesquiterpene lactones acetylcholine, 5-hydroxytryptamine (serotonin), hista being active ingredients since they are unlikely to be mine, some prostaglandins and leukotrienes may be 65 extracted from the plant by this method. involved. Allergic reactions to substances in inhaled The indications are that such compounds are alos dust or those absorbed from food may be manifested by likely to be efficacious in the treatment not only of bronchoconstriction or urticaria ("nettle-rash') or cir migraine but also of bronchial asthmas and arthritic 4,758,433 3 4 conditions such as rheumatoid arthritis, osteoarthritis thritis: prostaglandins, histamine, 5-hydroxytryptamine and related arthritides. This could not have been pre and bradykinin; in the case of asthma: histamine, 5 dicted from the completely unrelated cytotoxic activity hydroxytryptamine, bradykinin, acetylcholine, prosta reported by Lee et al (see above). glandins and the leukotrienes. We have surprisingly found a plant extract which has 5 All of these endogenous substances have in common biological activity strongly indicative of excellent phar the ability to cause smooth muscle to contract (i.e. go maceutical use, especially in the treatment of migraine, into spasm). Any drug which will act as an antagonist to asthma or arthritic conditios. The extract is a sesquiter a wide variety of chemically dissimilar spasmogens is pene lactone-containing extract from the plant Tanace termed a non-selective antagonist or a spasmolytic tum parthenium (hereinafter