In a complaint filed Monday in the Northern District of California, six women…accuse Daiichi Sankyo Co. of underpaying female sales reps, failing to promote them along with male colleagues, and discriminating against pregnant employees and working mothers…A spokeswoman for Daiichi Sankyo, which has U.S. headquarters in New Jersey, said in an email that the drugmaker complies with all laws regarding equal opportunity and nondiscrimination. [also refers to Novartis]