1'.h. GEISSMAN 2 g. of phosgene in 20 cc. of toluene and 1 g. of pyridine.
The mixture was heated a t 90" for one hour, cooled and filtered. The filtrate was washed successively with dilute acid and water. By concentration of the toluene solution, therz was obtained 1 g. (45%) of a brownish solid, m.p. 183186 . Crystallization from Skelly B gave material of m.p. 188-190'. Anal. Calcd. for ClrHllClS20: N, 10.83. Found: S , 10.76.
N-(6-Diethylaminoethyl)-N-methylphenothiazine-10-carboxamide.-A solution of 5.6 g. (0.021 mole) of phenothiazine-10-carboxylic acid chloride and 5.6 g. (0.042 mole) of N-(6-diethylaminoethyl)-methylamine in 50 cc. of dry benzene was refluxed overnight. The reaction mixture was washed with water and the benzene layer separated and extracted with dilute hydrochloric acid. Addition of alkali to the acid extracts liberated the free base which was taken up in ether. Concentration of the ether solution yielded a thick oil which solidified on standing. The weight of material melting a t 69-71' was 5.7 g. (77%). Crystallization from Skelly B gave 4.5 g. of product, m.p. 70-71'. Anal. Calcd. for CaHuNSOS: C, 67.57; H , 7.08; N, 11.82. Found: C,67.75; H,6.84; N, 11.55. The base dissolved in dry ether was treated with hydrogen bromide gas. The hydrobromide salt which separated melted a t 160-161 , after crystallization from isopropyl alcohol. ,%Dimethylaminoethyl Phenothiazine-10-carboxylate.A solution of 12.3 g. (0.05 mole) of phenothiazine-lo-carboxylic acid chloride and 8.9 g. (0.10 mole) of &dimethylaminoethanol in 100 cc. of dry benzene was refluxed overnight. After the reaction mixture was washed with water, the benzene was separated and the solvent removed. The residue was dissolved in ether and the solution treated with hydrogen chloride gas. The salt, collected by filtration, weighed 13.3 g . (76%), m.p. 211-213' (dec.). Purification from absolute alcohol gave material, m . p . 215-216' (drc \i
Vol. ip5
&Diethylaminoethyl Phenothiazine-10-carboxylate Methiodide and Methobromide .-The addition of excess methyl iodide to a dry ether solution of p-diethylaminoethyl phenothiazine-10-carboxylate resulted in the separation of the quaternary salt, m.p. 200-205' (dec.). After two crystallizations from absolute alcohol, the product melted a t 210211" (dec.). .4naZ. Calcd. for C~OH~JNZOZS: C, 49.59; H , 5.20; N, 5.78. Found: C,49.87; H, 5.31; N, 5.79. The methobromide obtained by addition of methyl bromide to an ether solution of the free base melted a t 207-208" (dec.) after crvstallization from absolute alcohol. Anal. Calcd. for C20Hz5BrIi202S: C, 54.91; H, 5.76. Found: C, 54.59; H, 5.82. &Diethylaminoethyl Phenothiazine-10-thiocarboxylate Methiodide and Methobromide .-The methiodide prepared in the foregoing manner melted a t 230-231" (dec.) after crystallization from absolute alcohol. Anal. Calcd. for C Z ~ H Z ~ I N ~C, OS 48.00; ~ : II, 5.03; S , 5.59. Found: C, 47.93; H, 4.94; N, 5.70. The methobromide, similarly prepared, crystallized from absolute alcohol, m.p. 228' (dec.). Anal. Calcd. for CwHzsBrN20&: C, 52.96; H , 5.56; N,6.18. Found: C,53.17; H , 5.75; N, 5.96. .
I
N-(p-Diethylaminoethyl)-phenothiazine-lO-carboxamide Methobromide.-This quaternary salt, after crystallization from absolute alcohol, melted a t 225-226' (dec.). Anal. Calcd. for C20HzsBrS30S.1/2HzO: C, 53.93; H, 6.11; N,9.43. Found: C. 54.04; H , 5.95; N,9.57.
Acknowledgment.-The authors are indebted to Mr. E. F. Shelberg and staff of the Department of hIicrochemica1 Analyses for the analyses reported in this paper. YORTHCHICAW,TLLISOIS
[C)OXTKIRC.TIOX FROM THE DEPARTMENT O F C ) H E M I S T K Y , UI1.IVEKSI1'T OF CALIPOKNIA, LOS ANGELES]
On the Structure of Eremophilone BY
vr. A . GEISSXAX
Rr30
>30 >30 >30 >25 >30 5.0
1.7 2.0
Experimental Assay .-Chartreusin was assayed by the paper-disc method outlined for the assay of fumagillin.8.4 Fumagillin was used as the assay standard for the isolation work. A unit of activity is defined a s being equivalent t o one microgram of fumagillin. Identification of Culture.-This culture which we have named StrePtomvces chartreusis could not be identified by following &e key in Bergey's Manual of Determinative Bacteriology .& The culture is a mesophilic saprophyte with characteristic powdery blue-gray to blue-green spores produced on various media. The sporulating hyphae formed open spirals on some media. White filamentous aerial mycelia were produced, approximately one micron in diameter. Fermentation.-The organism, Streptomyces chartreusis, is carried in culture on agar slants. The surface growth was used to inoculate shaken flasks (500-ml. erlenmeyer flasks each containing 100 ml. of culture broth). The flasks, after about three days of fermentation, were used to inoculate 5-gallon fermenters. These fermenters were (4) F. R. Hanson and T. E. Eble, Antibiotics and Chemolheragy, 1, 54 (1951). (5) R. S. Breed, E. G. D. Murray and A. P. Hitchens, "Bergey's Manual of Determinative Bacteriology," 6th Ed., The Williams and Wilkins Company, Baltimore, Md., 1948, pp. 929-933.
