Seven new gilvocarcin-type aryl-<i>C</i>-glycosides (<b>1</b>-<b>7</b>) and six known analogues (<b>8</b>-<b>13</b>) were isolated from the soil-derived <i>Streptomyces</i> sp. OUCMDZ-945. Their structures including absolute configurations were determined based on detailed spectroscopic analysis, chemical methods, ECD curves, and quantum chemical calculations. Compound <b>1</b>, which we named digilvocarcin A, is the first reported bis-gilvocarcin derivative possessing a novel cyclobutane moiety. This dimeric skeleton was confirmed to be formed from gilvocarcin V (<b>8</b>) through a light-induced [2 + 2] cycloaddition. Compounds <b>1</b>, <b>2</b>, <b>5</b>-<b>8</b>, and <b>11</b> showed antibacterial activity against <i>Staphylococcus aureus</i> ATCC 6538 and methicillin-resistant <i>Staphylococcus aureus</i> subsp. <i>aureus</i> ATCC 43300 (MIC values: 0.25-64 μg/mL).