Like Amazon.com Inc (NASDAQ: AMZN), Walgreens Boots Alliance (NASDAQ: WBA) is going for its piece of the healthcare pie. With its fiscal second quarter report, it topped estimates, but lowered the higher end of its full-year adjusted earnings guidance in response to a challenging macroeconomy. The new CEO, Tim Wentworth, continues to navigate the company out of a rough spot by slashing costs and solidifying the team, but the company’s healthcare transformation took its toll on leadership the bottom line. Fiscal second quarter highlights For the quarter ended on February 29th, Walgreens recorded sales grew about 6.3% to $37.05 billion,…