Cyclic hydrocarbons with an aminoalkyl sidechain

FIELD OF INVENTION

This invention relates to novel compositions of matter. More particularly, the invention relates to cyclic hydrocarbons with an aminoalkyl sidechain that are useful for inhibiting phospholipase A2 and for treating diabetes and obesity.

INFORMATION DISCLOSURE

The important role of phospholipase A2 in mammalian metabolism through the formation of prostaglandins is now well known. See W. Vogt, Advances in Prostaglandins and Thromboxane Research, 3, p. 89 (1978); P. C. Isakson, et al., Advances in Prostaglandin and Thromboxane Research, 3, page 113, (1978). Phospholipase A2 is responsible for the hydrolysis of arachidonic acid-containing phospholipids, thereby providing substrate for the multiple enzymes of the arachidonic acid cascade.

The products of the arachidonic acid cascade are varied. These products include prostaglandins, thromboxanes, leukotrienes, and other hydroxylated derivatives of arachidonic acid. All of the foregoing are referred to as "eicosanoids." While generally the products of the cascade are beneficial, in certain disease processes and other conditions the excessive production of eicosanoids induces deleterious consequences such as inflammation (see paper by N. A. Plummer, et al.; abstracted in Journal of Investigative Dermatology, 68, p. 246 (1977)); erythema (N. A. Plummer, supra); platelet aggregation (B. B. Vargaftig, J. Pharm. Pharmacol., 29, pp. 222-228 (1977)); and the release of SRS-A (slow reacting substance-anaphylaxis), a known mediator of allergic responses. The inhibition of phospholipase A2 prevents these and similar conditions mediated by the action of this enzyme.

Some inhibitors of phospholipase A2 are known. R. J. Flower and G. J. Blackwell have shown that certain anti-inflammatory steroids induce biosynthesis of a phospholipase A2 inhibitor which prevents prostaglandin generation. See Nature, 278, p. 456 (1979). These steroids are not direct inhibitors of phospholipase A2, but rather stimulate the synthesis of a phospholipase inhibiting factor called lipocortin, lipomodulin, or macrocortin.

Some examples of direct phospholipase A2 inhibition are known. Indomethacin, a drug with anti-inflammatory properties, has been shown to inhibit phospholipase A2 enzymes. See K. L. Kaplan, et al., Proc. Natl. Acad. Sci., 75, pp. 2955-2988 (1978).

Indomethacin has been shown to inhibit phospholipase A2 enzymes, isolated respectively from the venoms of Russell's Viper, Crotalus adamanteus, and bee, and from pig pancreas. Certain local anesthetics have been shown to inhibit phospholipase A2 activity by competing with calcium ion, which appears to be a requirement for phospholipase activity. See W. Vogt, Advances in Prostaglandin and Thromboxane Research, 3, p. 89 (1978) and E. Vallee et al., J. Pharm. Pharmacol., 31, pp. 588-92 (1974). Bromphenacyl bromide has been shown to inhibit phospholipase A2 by acylating a histidine residue which is at the active site of the enzyme. See M. Roberts, et al., J. of Biol. Chem., 252, pp. 2405-2411 (1977). R. Blackwell, et al., British J. Pharmacy, 62, p. 79-89 (1978) has disclosed that mepacrine inhibits the activity of phospholipase A2 derived from perfused guinea pig lung. Certain butyrophenones are disclosed as phospholipase A2 inhibitors in U.S. Pat. No. 4,239,780. D. P. Wallach and V. J. R. Brown, Bioch. Pharmacol., 30, pp. 1315-24 (1981) also refer to several compounds that inhibit phospholipase A2.

Some of the steroids employed for synthesizing compounds of the present invention and useful in some of the methods of treatment are known. See the doctoral thesis, L. J. Griggs, "Part I. Synthetic Approaches to 5- and 16-Thiaestrone. Part II. Estrone with a Diazacholesterol Side Chain," University of Michigan (1965). These compounds are stated therein to be potential hypocholesterolemic agents. U.S. Pat. No. 3,370,070 discloses similar steroid compounds which are useful as hypocholesterolemic agents and as antibacterial, anti-protozoal, and anti-algal agents.

Some of the steroidal compounds herein are also referred to in U.S. Pat. No. 3,284,475 and in P. D. Klimstra, et al., "Hypocholesterolemic Agents. VI. A- And B-Ring-Modified Azacholesterols", J. Med. Chem., 9, pp. 323-26 (1966).

The present invention also relates to antidiabetic agents. Hyperglycemia refers to a condition commonly found in patients suffering from mature-onset diabetes mellitus and other diseases in which impairment of pancreatic function is a consequence thereof. Accordingly, hyper-glycemic patients are those exhibiting elevated serum glucose levels. Failure to adequately control such elevated serum glucose levels has been associated in such patients with untoward cardiovascular effects (myocardioischemia, stroke, and peripheral vascular diseases), lethargy, coma, blindness, kidney failure and even death.

While conventional treatment for these hyperglycemic conditions may include diet (e.g. restriction of carbohydrate intake) and insulin injection, one important means of treating such patients is with oral antidiabetic agents such as those disclosed herein.

SUMMARY OF THE INVENTION

The present invention relates to cyclic hydrocarbons of formula I wherein:

A compound of the formula ##STR2## wherein: (I) Z is ##STR3##

(1) wherein D is

(a) H, (b) CH.sub.3, or (c) no bond;

(2) wherein E and J are

(a) H, (b) R.sub.5 O--, or (c) --N(CH.sub.3)--(CH.sub.2).sub.3 --N(CH.sub.3).sub.2 with the provisos that when E is H, the 5,6 bond is saturated and that when J is H, X.sub.2 and X.sub.3 are H;

(3) wherein G is

(a) nothing, or (b).fwdarw.O;

(4) wherein R.sub.5 is

(a) H, (b) C1-C3 alkyl, (c) benzyl, (d) acyl, (e) C(O)H, (f) HOCH.sub.2 CH(OH)CH.sub.2, (g) R.sub.4 --OC--(O)CH.sub.2 ;

(5) wherein X.sub.2 and X.sub.3 are

(a) H, (b) NO.sub.2, (c) NH.sub.2, (d) OH, or (e) halogen;

A. C8-C20 cycloalkyl, C. 2- or 4-cyclohexylcyclohexyl, D. 4-bicyclohexylcyclohexyl, E. 4-bicyclohexenylcyclohexyl, F. 3-cyclopentylcyclopentyl, G. 1-, 3- or 4-(2-decahydronaphthyl)cyclohexyl, H. 1- or 2-tetradecahydroanthracenyl, I. 2- or 3-tetradecahydrophenanthrenyl, J. 1- or 2-dodecahydro-1H-phenallyl, K. 1- or 2 hexadecahydropyrenyl, L. 1- or 2-octadecahydrotriphenylenyl, M. 1- or 2-octadecahydrochrysenyl, N. 1- or 2-octadecahydronaphthacenyl, O. phenylcyclohexyl, P. adamantyl, Q. pyrenyl, R. 3-fluorobiphenylyl, or S. 1- or 2- decalinyl;

II. wherein X.sub.1 is

A. NR.sub.1, B. NR.sub.1 R.sub.13, C. N.sup.+ .multidot.R.sub.1 .multidot.R.sub.1 .multidot.R.sub.13 X.sup.-, or D. --O--C(O)--CH((CH.sub.2).sub.3 -- NH.sub.2)(NH.sub.2);

1. wherein X.sup.- is a pharmaceutically acceptable anion;

2. wherein R.sub.13 is

a. methyl, or b..fwdarw.O;

3. wherein R.sub.1 is

a. H, b. --CHO, c. --COCH.sub.3, d. C1-C6 alkyl, e. --(CH.sub.2).sub.r -- CO.sub.2 R.sub.4, f. --CH.sub.2 CH.dbd.CH.sub.2, g. --(CH.sub.2).sub.p --X.sub.4, h. --(CH.sub.2).sub.m -- N(R.sub.6)(R.sub.7), i. --(CH.sub.2).sub.p --O(CH.sub.2).sub.p --N(R.sub.6)(R.sub.7), j. --(CH.sub.2).sub.p -- --Y--C(.dbd.NH)--NH.sub.2, k. --(CH.sub.2).sub.q --CH(NH.sub.2)--COOR.sub.16 , l. --(CH.sub.2).sub.p --N.dbd.C(R.sub.14)(R.sub.15), m. --(CH.sub.2).sub.p --NH--C(CH.sub.3).sub.2 --CH.sub.2 --C(O)--CH.sub.3, ##STR4##

(1) wherein R.sub.4 is

(a) H, or (b) C1-C2 alkyl;

(2) wherein X.sub.4 is

(a) OH, (b) OCH.sub.3, (c) OC.sub.2 H.sub.5, (d) OCH.sub.2 CH.sub.2 OH, (e)OTs, (f)OMs, (g)Cl, (h) Br, (j) aziridinyl, or (k) ##STR5## i) wherein R.sub.12 is ii)(a) C1-C2 alkyl, ii)(b) benzyl, ii)(c) CH.sub.2 Cl, ii)(d).fwdarw.O, ii)(e) CH.sub.2 COOC.sub.2 H.sub.5, or ii)(f) C3-C18 straight chain alkyl;

(3) wherein R.sub.6 is

(a) H, (b) C1-C13 alkyl, (c) benzyl, (d) phenyl, (e)--(CH.sub.2).sub.p --N(R.sub.10 (R.sub.11), (f)C(O)CH.sub.3, (g) ##STR6## i) wherein R.sub.10 and R.sub.11 are i)(a) H,i)(b) C1-C2 alkyl, or i)(c) (CH.sub.2).sub.3 --NH.sub.2 ;

ii) wherein R.sub.10 and R.sub.11 together are ##STR7##

(4) wherein R.sub.7 is

(a) H, (b) C1-C2 alkyl, (c) --(CH.sub.2).sub.p --N(R.sub.10)(R.sub.11), or (d) CHO;

(5) wherein R.sub.6 and R.sub.7 together are ##STR8## i) wherein X.sub.6 is i)(a) O, i)(b) NH, i)(c) NCH.sub.3, or i)(d) N(CH.sub.2).sub.q NH.sub.2 ; ##STR9##

(6) wherein Y is

(a) NH, or (b) S;

(7) wherein R.sub.8 is

(a) H, (b) C1-C2 alkyl, (c) OCH.sub.3, (d) NO.sub.2, (e) NH.sub.2, (f) NHCOCH.sub.3, (g) CN, (h) CH.sub.2 NH.sub.2. (i) CONH.sub.2, (j) Cl, (k) Br, or (1) COOCH.sub.3 ;

(8) wherein R.sub.9 is

(a) H, (b) methyl, (c) benzyl, or (d) --(CH.sub.2).sub.p N(R.sub.10)(R.sub.11);

(9) wherein R.sub.14 is

(a) H, or (b) C1-C6 alkyl;

(10) wherein R.sub.15 is C1-C6 alkyl;

(11) wherein R.sub.16 is

(a) H, or

(b) C1-C4 alkyl;

(12) wherein X.sub.7 and X.sub.8 are the same or different and are

(a) H, (b) CH.sub.3, (c) CF.sub.3, (d) halogen, (e) OH, (f) OCH.sub.3, (g) NO.sub.2, (h) NH.sub.2, (i) NHR.sub.4, (j) NR.sub.4 R.sub.4, (k) --CH.sub.2 NH.sub.2, (1) --CH.sub.2 NHR.sub.2, (m) --SO.sub.2 N(R.sub.3)(R.sub.4), (n) --CO.sub.2 R.sub.4, (o) CON(R.sub.3)(R.sub.4), (p) CH.sub.2 N(R.sub.3)(R.sub.4), or (q) tetrazolyl;

III. wherein R.sub.2 is

A. H, B. C1-C4 alkyl, C. benzyl, D. --(CH.sub.2).sub.p --N(R.sub.6)(R.sub.7), ##STR10## N(.fwdarw.O)(R.sub.6)(R.sub.7), H. --(CH.sub.2).sub.p N.sup.+ (CH.sub.2 --Ph)(R.sub.6)(R.sub.7), or I.

--(CH.sub.2).sub.p N.sup.+ (CH.sub.3)(R.sub.6)(R.sub.7), J. nothing;

IV. wherein R.sub.1 and R.sub.2 together are ##STR11##

1. wherein X.sub.5 is

a. O, b. NH, c. NCH.sub.3, or d. S; ##STR12##

2. wherein X.sub.9 is

a. O, b. NH, or c. NCH.sub.3 ;

V. wherein R.sub.3 is

A. H, B. C1-C2 alkyl, or C. CH.sub.2 OH;

wherein m is 2-8;

wherein n is 0-1;

wherein p is 2-8;

wherein q is 2-4;

wherein r is 1-8;

wherein s is 2-8; and

pharmacologically acceptable salts thereof;

with the proviso that when n is 1 and R.sub.1 is --(CH.sub.2).sub.m --N(R.sub.6)(R7) wherein m is 2 or 3 and R.sub.2 is H or CH.sub.3, or when R.sub.2 is --(CH.sub.2).sub.m --N(R.sub.6)(R7) wherein m is 2 or 3 and R.sub.1 is H, CH.sub.3, CHO, or CH.sub.3 CO, then R.sub.6 and R.sub.7 cannot both be hydrogen, methyl, or ethyl;

and with the proviso that when n is 0 and R.sub.1 is --(CH.sub.2).sub.m --N(R.sub.6)(R7) wherein m is 2 or 3 and R.sub.2 is H or CH.sub.3, or when R.sub.2 is --(CH.sub.2).sub.m --N(R.sub.6)(R7) wherein m is 2 or 3 and R.sub.1 is H, CH.sub.3, CHO, or CH.sub.3 CO, then R.sub.6 and R.sub.7 cannot both be hydrogen, methyl, or ethyl, propyl, or isopropyl;

and with the proviso that when n is 0 and one of R.sub.1 and R.sub.2 is --(CH.sub.2).sub.m --N(R.sub.6)(R7) wherein m is 3, and the other is H or methyl, then R.sub.6 and R.sub.7 cannot be H or methyl;

and with the proviso that when n is 0 and X1 is NR.sub.1, then R.sub.1 cannot be CHO when R.sub.2 is H;

for each of the foregoing provisos, Z is ##STR13##

The material constituting a full disclosure of these compounds, their use and preparation is described in U.S. Pat. No. 5,196,542, issued 23 Mar. 1993, incorporated by reference herein. ##STR14##