US 11,053,250 B2
Pyrrolo[1,2-b]pyridazine derivatives
Stephen Ammann, Redwood City, CA (US); Elizabeth M. Bacon, Burlingame, CA (US); Gediminas Brizgys, San Carlos, CA (US); Elbert Chin, San Mateo, CA (US); Chienhung Chou, Dublin, CA (US); Jeromy J. Cottell, Redwood City, CA (US); Marilyn Ndukwe, Lebanon, NH (US); James G. Taylor, Burlingame, CA (US); Nathan E. Wright, Foster City, CA (US); Zheng-Yu Yang, Palo Alto, CA (US); and Sheila M. Zipfel, San Mateo, CA (US)
Assigned to Gilead Sciences, Inc., Foster City, CA (US)
Filed by Gilead Sciences, Inc., Foster City, CA (US)
Filed on Aug. 9, 2019, as Appl. No. 16/537,385.
Claims priority of provisional application 62/718,204, filed on Aug. 13, 2018.
Prior Publication US 2020/0048261 A1, Feb. 13, 2020
Int. Cl. C07D 487/04 (2006.01); A61K 31/5025 (2006.01); A61P 29/00 (2006.01)
CPC C07D 487/04 (2013.01) [A61K 31/5025 (2013.01); A61P 29/00 (2018.01)] 31 Claims
 
1. A compound of formula (I):

OG Complex Work Unit Chemistry
wherein “Het” is selected from:

OG Complex Work Unit Chemistry
X and Y are each independently selected from: —H, —F, —Cl, —Br, —CN, —CF3, —CF2H, —OH, or —OCH3;
R1 and R2 are each independently selected from:
a) C1-10 alkyl optionally substituted with Z1;
b) C3-10 cycloalkyl optionally substituted with Z1;
c) 5-10 membered heteroaryl optionally substituted with Z1;
d) C6-10 aryl optionally substituted with Z1;
e) 4-12 membered heterocyclyl optionally substituted with Z1;
f) —N(R12)(R12), —S(O)2R12, —S(O)2 N(R12)(R12), or —H;
Z1 is independently oxo, halo, —NO2, —N3, —CN, C1-9 alkyl, C2-6 alkenyl, C2-6 alkynyl, C3-15 cycloalkyl, C1-8 haloalkyl, aryl, heteroaryl, heterocyclyl, —O—R12, —C(O)—R12, —C(O)O—R12, —C(O)—N(R12)(R12), —N(R12)(R12), —N(R12)2(R12)+, —N(R12)C(O)—R12, —N(R12)C(O)O—R12, —N(R12)C(O)N(R12)(R12), —N(R12)S(O)2(R12), —NR12S(O)2N(R12)(R12), —NR12S(O)2O(R12), —OC(O)R12, —OC(O)OR12, —OC(O)—N(R12)(R12), —Si(R12)3, —S—R12, —S(O)R12, —S(O)(NH)R12, —S(O)2R12 or —S(O)2N(R12)(R12);
wherein any alkyl, alkenyl, alkynyl, cycloalkyl, haloalkyl, aryl, heteroaryl or heterocyclyl is optionally substituted with Z1a;
each Z1a is independently oxo, halo, —NO2, —CN, —N3, C1-9 alkyl, C2-6 alkenyl, C2-6 alkynyl, C3-15cycloalkyl, C1-8 haloalkyl, aryl, heteroaryl, heterocyclyl, —O—R12, —C(O)R12, —C(O)O—R12, —C(O)N(R12)(R12), —N(R12)(R12), —N(R12)2(R12)+, —N(R12)—C(O)R12, —N(R12)C(O)O(R12), —N(R12)C(O)N(R12)(R12), —N(R12)S(O)2(R12), —N(R12)S(O)2—N(R12)(R12), —N(R12)S(O)2O(R12), —OC(O)R12, —OC(O)OR12, —OC(O)—N(R12)(R12), —Si(R12)3, —S—R12, —S(O)R12, —S(O)(NH)R12, —S(O)2R12 or —S(O)2N(R12)(R12);
wherein any alkyl, alkenyl, alkynyl, cycloalkyl, haloalkyl, aryl, heteroaryl or heterocyclyl is optionally substituted with Z1b;
each R12 is independently H, C1-9 alkyl, C2-6 alkenyl, C2-6 alkynyl, C3-15 cycloalkyl, aryl, heteroaryl or heterocyclyl;
wherein any alkyl, alkenyl, alkynyl, cycloalkyl, aryl, heteroaryl or heterocyclyl is optionally substituted with Z1a;
each Z1b is independently oxo, hydroxy, halo, —NO2, —N3, —CN, C1-9 alkyl, C2-6 alkenyl, C2-6 alkynyl, C3-15 cycloalkyl, C1-8 haloalkyl, aryl, heteroaryl, heterocyclyl, —O(C1-9 alkyl), —O(C2-6 alkenyl), —O(C2-6 alkynyl), —O(C3-15 cycloalkyl), —O(C1-8 haloalkyl), —O(aryl), —O(heteroaryl), —O(heterocyclyl), —NH2, —NH(C1-9 alkyl), —NH(C2-6 alkenyl), —NH(C2-6 alkynyl), —NH(C3-15cycloalkyl), —NH(C1-8 haloalkyl), —NH(aryl), —NH(heteroaryl), —NH(heterocyclyl), —N(C1-9 alkyl)2, —N(C3-15 cycloalkyl)2, —N(C2-6 alkenyl)2, —N(C2-6 alkynyl)2, —N(C3-15cycloalkyl)2, —N(C1-8 haloalkyl)2, —N(aryl)2, —N(heteroaryl)2, —N(heterocyclyl)2, —N(C1-9 alkyl)(C3-15 cycloalkyl), —N(C1-9 alkyl)(C2-6 alkenyl), —N(C1-9 alkyl)(C2-6 alkynyl), —N(C1-9 alkyl)(C3-15 cycloalkyl), —N(C1-9 alkyl)(C1-8 haloalkyl), —N(C1-9 alkyl)(aryl), —N(C1-9 alkyl)(heteroaryl), —N(C1-9 alkyl)(heterocyclyl), —C(O)(C1-9 alkyl), —C(O)(C2-6 alkenyl), —C(O)(C2-6 alkynyl), —C(O)(C3-15 cycloalkyl), —C(O)(C1-8 haloalkyl), —C(O)(aryl), —C(O)(heteroaryl), —C(O)(heterocyclyl), —C(O)O(C1-9 alkyl), —C(O)O(C2-6 alkenyl), —C(O)O(C2-6 alkynyl), —C(O)O(C3-15 cycloalkyl), —C(O)O(C1-8 haloalkyl), —C(O)O(aryl), —C(O)O(heteroaryl), —C(O)O(heterocyclyl), —C(O)NH2, —C(O)NH(C1-9 alkyl), —C(O)NH(C2-6 alkenyl), —C(O)NH(C2-6 alkynyl), —C(O)NH(C3-15cycloalkyl), —C(O)NH(C1-8 haloalkyl), —C(O)NH(aryl), —C(O)NH(heteroaryl), —C(O)NH(heterocyclyl), —C(O)N(C1-9 alkyl)2, —C(O)N(C3-15 cycloalkyl)2, —C(O)N(C2-6 alkenyl)2, —C(O)N(C2-6 alkynyl)2, —C(O)N(C3-15 cycloalkyl)2, —C(O)N(C1-8 haloalkyl)2, —C(O)N(aryl)2, —C(O)N(heteroaryl)2, —C(O)N(heterocyclyl)2, —NHC(O)(C1-9 alkyl), —NHC(O)(C2-6 alkenyl), —NHC(O)(C2-6 alkynyl), —NHC(O)(C3-15 cycloalkyl), —NHC(O)(C1-8 haloalkyl), —NHC(O)(aryl), —NHC(O)(heteroaryl), —NHC(O)(heterocyclyl), —NHC(O)O(C1-9 alkyl), —NHC(O)O(C2-6 alkenyl), —NHC(O)O(C2-6 alkynyl), —NHC(O)O(C3-15 cycloalkyl), —NHC(O)O(C1-8 haloalkyl), —NHC(O)O(aryl), —NHC(O)O(heteroaryl), —NHC(O)O(heterocyclyl), —NHC(O)NH(C1-9 alkyl), —NHC(O)NH(C2-6 alkenyl), —NHC(O)NH(C2-6 alkynyl), —NHC(O)NH(C3-15 cycloalkyl), —NHC(O)NH(C1-8 haloalkyl), —NHC(O)NH(aryl), —NHC(O)NH(heteroaryl), —NHC(O)NH(heterocyclyl), —SH, —S(C1-9 alkyl), —S(C2-6 alkenyl), —S(C2-6 alkynyl), —S(C3-15 cycloalkyl), —S(C1-8 haloalkyl), —S(aryl), —S(heteroaryl), —S(heterocyclyl), —NHS(O)(C1-9 alkyl), —N(C1-9 alkyl)(S(O)(C1-9 alkyl), —S(O)N(C1-9 alkyl)2, —S(O)(C1-9 alkyl), —S(O)(NH)(C1-9 alkyl), —S(O)(C2-6 alkenyl), —S(O)(C2-6 alkynyl), —S(O)(C3-15 cycloalkyl), —S(O)(C1-8 haloalkyl), —S(O)(aryl), —S(O)(heteroaryl), —S(O)(heterocyclyl), —S(O)2(C1-9 alkyl), —S(O)2(C2-6 alkenyl), —S(O)2(C2-6 alkynyl), —S(O)2(C3-15 cycloalkyl), —S(O)2(C1-8 haloalkyl), —S(O)2(aryl), —S(O)2(heteroaryl), —S(O)2(heterocyclyl), —S(O)2NH(C1-9 alkyl), or —S(O)2N(C1-9 alkyl)2;
wherein any alkyl, cycloalkyl, aryl, heteroaryl, or heterocyclyl is optionally substituted with one or more halo, C1-9 alkyl, C1-8 haloalkyl, —OH, —NH2, —NH(C1-9 alkyl), —NH(C3-15 cycloalkyl), —NH(C1-8 haloalkyl), —NH(aryl), —NH(heteroaryl), —NH(heterocyclyl), —N(C1-9 alkyl)2, —N(C3-15cycloalkyl)2, —NHC(O)(C3-15 cycloalkyl), —NHC(O)(C1-8 haloalkyl), —NHC(O)(aryl), —NHC(O)(heteroaryl), —NHC(O)(heterocyclyl), —NHC(O)O(C1-9 alkyl), —NHC(O)O(C2-6 alkynyl), —NHC(O)O(C3-15 cycloalkyl), —NHC(O)O(C1-8 haloalkyl), —NHC(O)O(aryl), —NHC(O)O(heteroaryl), —NHC(O)O(heterocyclyl), —NHC(O)NH(C1-9 alkyl), —S(O)(NH)(C1-9 alkyl), S(O)2(C1-9 alkyl), —S(O)2(C3-15 cycloalkyl), —S(O)2(C1-8 haloalkyl), —S(O)2(aryl), —S(O)2(heteroaryl), —S(O)2(heterocyclyl), —S(O)2NH(C1-9 alkyl), —S(O)2N(C1-9 alkyl)2, —O(C3-15cycloalkyl), —O(C1-8 haloalkyl), —O(aryl), —O(heteroaryl), —O(heterocyclyl), or —O(C1-9 alkyl);
or a pharmaceutically acceptable salt, stereoisomer, or mixture of stereoisomers thereof.