Idea was born because of this answer.
I propose you should reconsider splitting options into two interfaces. One for constructor and one for common use. TypeScript users would gain a lot, since this tell us which properties exists on specific widget and are safe to use.
The other benefit is to avoid typecasting to any.
Propose definition structure:
class Window extends kendo.ui.Widget{ static fn: Window; options: WindowProperties; //notice a change readonly isMaximized?: boolean; element: JQuery; wrapper: JQuery; static extend(proto: Object): Window; constructor(element: Element, options?: WindowOptions); center(): kendo.ui.Window; close(): kendo.ui.Window; content(): string; content(content?: string): kendo.ui.Window; content(content?: JQuery): kendo.ui.Window; destroy(): void; maximize(): kendo.ui.Window; minimize(): kendo.ui.Window; open(): kendo.ui.Window; pin(): void; refresh(options: any): kendo.ui.Window; restore(): kendo.ui.Window; setOptions(options: any): void; title(): string; title(text?: string): kendo.ui.Window; toFront(): kendo.ui.Window; toggleMaximization(): kendo.ui.Window; unpin(): void;}interface WindowOptions { name?: string; actions?: any; animation?: boolean|WindowAnimation; appendTo?: any|string; autoFocus?: boolean; content?: WindowContent; draggable?: boolean; iframe?: boolean; height?: number|string; maxHeight?: number; maxWidth?: number; minHeight?: number; minWidth?: number; modal?: boolean; pinned?: boolean; position?: WindowPosition; resizable?: boolean; scrollable?: boolean; title?: string|boolean; visible?: boolean; width?: number|string; activate?(e: WindowEvent): void; close?(e: WindowCloseEvent): void; deactivate?(e: WindowEvent): void; dragend?(e: WindowEvent): void; dragstart?(e: WindowEvent): void; error?(e: WindowErrorEvent): void; maximize?(e: WindowEvent): void; minimize?(e: WindowEvent): void; open?(e: WindowEvent): void; refresh?(e: WindowEvent): void; resize?(e: WindowEvent): void;}interface WindowProperties extends WindowOptions{ isMaximized?: boolean;}