US 12,377,154 B2
Drug delivery system for treating disease
Stephen Dimagno, Chicago, IL (US)
Assigned to SDG, LLC, Cambridge, MA (US)
Filed by SDG LLC, Cambridge, MA (US)
Filed on Apr. 19, 2023, as Appl. No. 18/303,387.
Application 18/303,387 is a division of application No. 16/759,793, granted, now 11,666,654, previously published as PCT/US2018/058758, filed on Nov. 1, 2018.
Claims priority of provisional application 62/581,405, filed on Nov. 3, 2017.
Prior Publication US 2023/0381326 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 47/58 (2017.01); A61K 31/519 (2006.01); C08F 220/58 (2006.01)
CPC A61K 47/58 (2017.08) [A61K 31/519 (2013.01); C08F 220/58 (2013.01)] 18 Claims
 
1. A compound represented by one of the following formulae:

OG Complex Work Unit Chemistry
or a pharmaceutically acceptable salt thereof,
wherein:
X is CH2, NH, N—R3, N(H)C(O), O, or S;
n is 0-8;
R1 is alkyl;
R2 is alkyl; and
R3 is acetyl or CH3.