Heat oven to 325. Generously spray bundt pan with non-stick baking spray.
Cream together butter and sugar. Add eggs and mix well. Combine in vanilla, orange extract and sour cream. Add baking soda and flour and mix just until combined. Stir in chocolate chips and zest. Pour into prepared pan and bake for 50-60 minutes or until wooden pick inserted in middle comes out clean.
Let cake cool 10 minutes in pan before removing and placing on cooling rack to cool completely. Once cool, prepare glaze by combining ingredients in small saucepan and simmering over medium heat until sugar is dissolved. Let cool slightly before spooning or brushing over cake. (You can see in my picture that my glaze had a little bit of pulp in it. Yum!)