A corporation shall have power to purchase, take, receive, or otherwise acquire, hold, own, pledge, transfer, or otherwise dispose of its own shares; provided, that it shall not purchase, either directly or indirectly, its own shares when its net assets are less than its stated capital, or when by so doing its net assets would be reduced below its stated capital. Notwithstanding the foregoing limitation, a corporation may purchase its own shares for the purpose of:
§ 351.390, RSMo